1.The fact that your club is historycally linked with the argies does not mean that in this moment Higuain and Di Maria aren't being treated badly in comparison with other players from you club. And I'm sorry, but if you give Saviola's example, you should also accept that Milito has been treated (too) good by Barca. The only argentinians with whom the club hasn't been fair are Riquelme(although the circumstances-Gaspart- had something to do with that) and Maradona(who, just as Ronaldo where kicked out because they wanted more money).
2.Mascherano is not Argentina's captain..and being a starter for either Liverpool or Arg isn't saying to much about the player in question. However, Masche played more minutes and in more important games than Higuain and he is as much of a starter as Puyol is. In the matches against you Pep preffered the players who have a connection with the club because we all know that for Puyol, Pique or Casillas a Clasico is something else then for Masche(who played all the 180 min in the Supercup). And I'm'sure that Mascherano would have preffered playing against Espanyol to that of being a starter on San Siro.
Season 2011/2012:
04/01 2012 Barcelona H- Osasuna Esp Cup W 4-0
18/12 2011 Barcelona A- Santos FC CWC W 0-4 On 56 0
15/12 2011 Barcelona A- null CWC W 0-4 Started
03/12 2011 Barcelona H- Levante La Liga W 5-0 Started
29/11 2011 Barcelona H- Rayo La Liga W 4-0 Started
23/11 2011 Barcelona A- Milan UCL W 2-3 Started
06/11 2011 Barcelona A- Athletic La Liga D 2-2 Started
29/10 2011 Barcelona H- Mallorca La Liga W 5-0 Started
25/10 2011 Barcelona A- Granada La Liga W 0-1 Started
22/10 2011 Barcelona H- Sevilla La Liga D 0-0 Started
19/10 2011 Barcelona H- V Plzen UCL W 2-0 Started
02/10 2011 Barcelona A- Sporting La Liga W 0-1 Started
28/09 2011 Barcelona A- BATE Borisov UCL W 0-5 Started
24/09 2011 Barcelona H- Atlético La Liga W 5-0 Started
21/09 2011 Barcelona A- Valencia La Liga D 2-2 Started
17/09 2011 Barcelona H- Osasuna La Liga W 8-0 Started
13/09 2011 Barcelona H- Milan UCL D 2-2 Started
29/08 2011 Barcelona H- Villarreal La Liga W 5-0 Started
26/08 2011 Barcelona H- FC Porto Super C W 2-0 Started
17/08 2011 Barcelona H- Real Madrid Sup Cup 3-2 Started
14/08 2011 Barcelona A- Real Madrid Sup Cup D 2-2 Started
So appart from the 2 derbies, Masche also missed the games against Getafe, Zaragoza, Sociedad, Racing and Plzen. Like I said, he was treated so badly that I'm sure that in this moment he is thinking to submit a transfer request.
3. Higuain's 2011/2012 season
Started:
10/01 2012 Real Madrid A- Málaga Esp Cup W 0-1 Off 69 min
07/01 2012 Real Madrid H- Granada La Liga W 5-1 Off 82 min
03/01 2012 Real Madrid H- Málaga Esp Cup W 3-2 Started
13/12 2011 Real Madrid A- Ponferradina Esp Cup W 0-2 Started
07/12 2011 Real Madrid A- Ajax UCL W 0-3 Started
03/12 2011 Real Madrid A- Sporting La Liga W 0-3 Off 75 min
22/11 2011 Real Madrid H- D Zagreb UCL W 6-2 Started
06/11 2011 Real Madrid H- Osasuna La Liga W 7-1 Started
29/10 2011 Real Madrid A- R Sociedad La Liga W 0-1 Off 81 min
22/10 2011 Real Madrid A- Málaga La Liga W 0-4 Off 69 min
15/10 2011 Real Madrid H- Betis La Liga W 4-1 Started
02/10 2011 Real Madrid A- Espanyol La Liga W 0-4 Started
24/09 2011 Real Madrid H- Rayo La Liga W 6-2 Off 58 min
Came as a substitute:
10/12 2011 Real Madrid H- Barcelona La Liga L 1-3 On 67
26/11 2011 Real Madrid H- Atlético La Liga W 4-1 On 61
19/11 2011 Real Madrid A- Valencia La Liga W 2-3 On 72
02/11 2011 Real Madrid A- Lyon UCL W 0-2 On 70
26/10 2011 Real Madrid H- Villarreal La Liga W 3-0 On 74
18/10 2011 Real Madrid H- Lyon UCL W 4-0 On 71
27/09 2011 Real Madrid H- Ajax UCL W 3-0 On 74
21/09 2011 Real Madrid A- Racing La Liga D 0-0 On 67
18/09 2011 Real Madrid A- Levante La Liga L 1-0 On 58
14/09 2011 Real Madrid A- D Zagreb UCL W 0-1 On 77
10/09 2011 Real Madrid H- Getafe La Liga W 4-2 On 86
28/08 2011 Real Madrid A- R Zaragoza La Liga W 0-6 On 75
17/08 2011 Real Madrid A- Barcelona Sup Cup 3-2 On 63
14/08 2011 Real Madrid H- Barcelona Sup Cup D 2-2 On 80
17/12 2011 Real Madrid A- Sevilla La Liga W 2-6 Unused Substitute
Like you can see, Higuain didn't start ONE important match for you. If these aren't the stats of a sub(an important one, but still a sub), I don't know which are. I don't care how you treat him, but it seems a bit far fetched to compare him with Mascherano. Maybe Pedro would be a better idea.
4. Messi didn't spoke catalan when FCB decided to help 11 years ago, just like he doesn't speak it now(although I saw some catalans on a forum who were wishing to see Messi saying more then 2 words in catalan). And you're delusional if you believe that Guardiola or the club treats Messi better because he can say "Bon dia" or "Visca Catalunya"..another fun fact is that your own club has forbidden Cristiano to speak another language than spanish while he is in Spain(so I don't know who is close minded in this whole debate). And if its a player in our current squad who learnt catalan(without beeing forced), that is Iniesta..Yaya used to speak in catalan also.
In conclusion, Messi can do all he wants because of this: