Suarez was great for Liverpool too tbf.
I think both Suarez and Lewandowski's peaks are better than Benzema's but Benzema is the most clutch striker of his generation and the more consistent player overall.
I feel there are different standards. For Liverpool, he basically didn't play in the CL. The pressure was low as they were not expected to win or compete for big titles. He was great for the PL level no doubt, smashing teams like Norwich and such. But this is a different level. For me, Suarez just showed too little vs the biggest teams in Europe.
Suarez played at the clutch levels of Benzema in 2015 and partly in 2016 when I felt Messi and Neymar let him down. That's it. Way too short. by 2017 he was done in CL basically.
Right now, in my head it's pretty clear, Benzema - Lewandowski - Suarez is the order for the 2010s early 2020s.
Peak Ronaldinho is better than Cristiano Ronaldo, but Ronaldo ended up as a clearly better player. Consistency over time against the biggest teams is the most important factor for me.