It's a way better game as Zero. I like playing as X, too, but Zero is who the game was actually tuned for and it shows.
i don't really like playing as zero,it feels like the difficulty got artificialy inflated by the fact that i need to be 2 inch close to bosses if i want to deal any sort of damage,one boss in particular is extremely annoying because he teleports,attack and vanish so i'm forced to either take damage or i have like 2 seconds to deal a pixel worth of damage using my shittiest attack between when he teleports and attack
Or beat the right boss first so that you can just kill that boss with timed one shots. The only boss I'll brook complaints about difficulty about with Zero is Sigma, and even then, I'm going to laugh at you and call you a pussy.
i did beat every boss before that boss,i just assumed that bosses that were weak to an X weapon that had no zero equivalent (since he gets lot of useless stuff like double jumps and air dash) would have no weakness at all when playing as zero

anyway even playing with zero i know what's wrong with the game... while on a surface level it hits all the spot of a nice megaman game
- the level are short
- they feel all the samey
- the music ain't good
- some of the bosses have huge blind spot which makes them super easy,heck some of the bosses can't even hit you at all as long as you are clinging to a wall (like the manta one)
- the special weapons are all kinda sucky too,a good chunk of them don't differ much from your buster,the one that do differ have super stupid limitation (like the ice one which require you to be zero-close to your target)
sigma with X in X4 is wtf for me
like sigma,the first form is so easy that it's laughable,the second form.... dash left,jump into left wall,wait for the scythe to hit the wall,jump into right wall,i don't think i can name a previous megaman game where i am able to dodge every single attack of the first form of the final boss much less the second one
well anyway might as well try x5 and x6 next,i remember reading one of these feature hostage to rescue which die easily and that pissed off a lot of people?