Good speach Mr \__o___/
So its Punk vs Burke? ok..
let me start with Burke first,
Burke as we all know was un-recognized name to say the least. Starting as a manager to Sylvester Terkey when they both joined Smackdown last year. He was acting as the "Mic Man" and he is very good in that. Having mic skills and some how kinda heel features in his attitude. This leads to one thing, having mic skills and attitude of his will only reveal that he is good as "Heel". If they gave him a face run, imo he wont have that aggility and response from the crowde.
So its kinda a wooden stick in the throat. Losing the heel status will result in losing WWE contract imo.
Talking about Punk,
Punk as we all know this before, that he was so successful in the indy promotions. He had good feuds there and his last feuds with Samoa Joe were that good to give him the chance of his life to sign for WWE.
Punk has the following:
1- Pure martial art skills
2- Strong attendance
3- Strong as face
Now to compare the two:
Punk vs Burke
In wrestling skills= Punk better
In mic skills= Burke better
In face status= punk
in heel status= Burke
in the ability to drag fans and merchandise= Punk (due to him being strong face)
now what they both equal at?
Punk and Burke, both have the quickness, speed, counter-attacks and and both have the classical "No gimmick" appearance.
As an overall view, I would say that Punk would have a more successful career than Burke.
And for your question, to specify it to "ECW" ? would also be Punk. As i mentioned above, Punk has the ability to drag fans, that is called the "it" factor. In WWE, they do care about being able to drag fan more than other things due to business issues and the need to get as much profit as possible as wrestling these days became a business company than just being a sports company.