Spider Ham entrance animation is a funny cartoonish one as the character is.
Ok, but no other champ do like this, Deadpool do some jump before ,but is ready to do the 1st hit.
So, Spider Ham have this disadvantage if you want to start hit your rival(cpu).
Try it yourself and will fail miserably.
Even against tiny Champs as Rocket he fail to hit first. But the inverse no, Rocket can hit Ham easily.
A few times the rival (cpu) wont start by hit, maybe with a dex or in rare cases a parry.
In Battlegrounds is way worse if you're hit before ...
Of course we can parry or dex at first, but this thing should be fixed , removing the last jump... or ...pump
Some examples

1 - Against Thing

2 - Against Rocket

3 - Now, with Rocket against Ham

4 - Ham vs Ham, we cant do the 1st hit also

5 - Against Thing, in this example, the rival goes back and we can hit
Try and see...