^ I understand your point completely. Though everyone being on the ground and a few feet away from each other at the start gives QS the Massive advantage. So it's hard to be totally fair IMO.
I mean if Magneto can't start with his shields up, then why should Hulk start as Hulk? Maybe he starts as Banner and has to transform into Hulk. Or maybe Tony starts without his IM armour and has to put it on when the fight starts... See the problem?
But I suppose it's up to the OP to have stips such as Magneto has his shields already raised, or Tony begins the fight airborne, or Xavier is physically at the mansion but present in the combat arena through his Astral form.
Personally I just like to discuss the fights with different starting scenarios to showcase the different strengths/weaknesses each character has.