I think it's all in the head
like... someone may think they're better or worse when wearing a certain item

like.. back in 2012-2013, I thought I was better when I wore the ninja headband omg

I get all the firsts when i wear my sonic hair kkkkk

i have to wear the spiky ear to motivate me

Wtf....?
Sounds fucking strange dude.

I never wj better!

I walljump better in pokelua, for some reason...

Having less items equipped makes my wjing a bit lighter. Having tail accessories make me feel like my mouse is heavy.

yes.
the chicken beak.

Yep I have 20+ outfits and wj really good with some, and with others I suck.

It's obviously not a physical change but the more used I am to an outfit, the easier it is to figure out how I'll contact the wall, thus, making it easier to wj. More bulky or lighter outfits, they kinda throw me off because I'm not as used to how my mouse will look while jumping.

Partyfool a dit :

I get all the firsts when i wear my sonic hair kkkkk

that's because you're a br at heart, party

It's all in your head. I do get a chuckle every time I see someone with bulky items (fish head and umbrella are the main culprits) miss the cheese and not notice it until they don't get first.

something that hinders my game play is wearing outfits I'm not use to wearing yet, because I forget which mouse is mine LOL especially when a new fur is released, if I buy it, I'm like WHOOOOOO AMMM IIIIII for a dozen rounds.

I don't think so.
Only cheese affects wj gameplay otherwise, outfits don't have any connections with better wj.