I'm more than fine with the underdog status but to me, "we're going to get pummeled" or "Bayern will score double digits" or "Bayern will annihilate us" or any variation of this is small club mentality.
On one hand, our fans moan about us not getting to deeper stages of CL more often. And now when we do have the opportunity, it's straight fear. Seems to me like some of our fans (not you) are only comfortable being Barcelona fans when we are overwhelming favorites with all time great teams.
They should probably get used to ties being more 50-50 or us being underdogs in the future. Perhaps even get used to the fact that CL finals aren't automatically won like Juve, Bayern, United, Milan, Pool fans have come to know.