Tab vs Action Combat Philosphy

You still haven't explained how percent resist 'balances' in favor of less skilled any better than 100% hit but with more technical mechanics.

The luck goes both ways though. The hard cc existing in a simplified state in the first place will mean that the higher skill player will still dominate. Because hard cc is a free damage mechanic by nature and increasing higher skilled players damage means they will win much more often than not.

If the skill gap was close enough that a lucky stun is enough to change the out come then so is technical mechanic based stun. Make them miss their aim, break out, fail a set up due to a required skill getting baited. If the skill gap was high enough that these technical mechanics are unable to satisfy the design goal of 'making sure less strong players have a chance. Then a strong player missing their stun is probably inconsequential to the out come anyway.

The only thing random miss actually helps is 'a random chance to run away.' A noble effort but there are better ways to design around that too without rng.