That's true but he had funding and he didn't have to worry about another job.It turns out to be an MMA fighter, you need to work more than a year to be good at it.
The comic book and the convention apperences were clearly a bucket list type thing for him.
Gall had to train and work a 9 to 5 all while waiting to see if Punk would even fight.
Plus he always had to be worried about the UFC cutting him if he didn't win. Punk just had to show up and make weight to get his paycheck.