attention to everyone convinced that x or y class is easy as fuck and they play the only class that takes actual skill
skill level is somewhat transferable from class to class and when you main a class it always seems more difficult at first because you start playing it while you still suck at this game and work your way up
then, when you first start playing another class, it seems that much easier because you have improved so much at your first class and a lot of the principles carry over
this is why all scouts think soldier is the easiest thing ever and all soldiers think scout is the easiest thing ever (well, that and the kneejerk reaction to being killed a lot by the other class)
now, that's not to say every class is equal in learning curve/skill ceiling/etc., but you have to understand that your opinions are inherently biased
for instance, I mained demo a lot, and am playing soldier this season. to me soldier seems much easier, but that is in large part because at least half of my hours in demo were from before I got into comp/while I was still like low open