[quote=@Gun]Note: It should be stated that when in cqc situations, my idea of interrupts is a bit more lax, because of the nature of cqc itself. Most times people aren't just going to do a literal single punch or kick, because fights would last hours lol. So doing things like 'interrupting' some dudes 30 punch barrage is also fine with me. But doing something like 'as soon as his arm flexed, I punched first.' thereby changing everything, isn't. And that right there? The whole 'reflexes' excuse to get away with it is the most general reason given.

'I have fast reflexes, so I see you about to move, and instead of preparing and reacting accordingly, I'm gonna argue that my speed and reflexes together would make my interrupt entirely ok and logical.' not that there isn't a defense for that, but I just find that its majorly used as a way to sneak out of unfavorable situations, at least when they were fighting me.

'man, that attack is kinda deadly and I don't really got too many answers for it. OH. I KNOW. ILL JUST STOP IT FROM HAPPENING.'
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Reflexes are a bitch, because people use them shits for everything. An arm flexing, unless you can see in the future, there is no real way to know he's about to punch the shit out of you, but there isn't much you can do to stop them from reacting to it. Now if they include mention they are about to get punched. 

Reflexes are assholes, because you could be in close range and most people still wanna dodge. Boxers get a pass, somewhat, because those fuckers are literally trained to try and avoid shit, unless their an in-fighter, where it is almost imperative to take some hits to get on the inside.