Don't look at me, I'm not a professional video gaming journalist.
Although I WILL point out one important difference.
-Walter White was a respectable high school chemistry teacher who once helped establish a successful business but that he never benefited from. With his extensive knowledge of the process, he set out to create the cleanest, purest methamphetamine ever, Heisenberg's trademark "blue sky," in order to give people something that, while dangerous, they would only get from someone else anyway, ensuring the quality of his product and some level of safety for his customers, and thereby guaranteeing future business, with his #1 rule being "respect the chemistry." Although his sidekick Jesse would have bouts with addiction, he himself never partook.
-Unaccustomed to violence. Once took a beating for buying a revolver.
-Brilliant chemist. Jesse just does the bitch work.
-Failed businessman. Has a white collar look, but was working two jobs just to get by.
-Quality meth. High purity, blue crystals.
-Does not use. Gets on Jesse's case for using.
-Trevor Philips was a Canadian Air Force reject who took to conducting robbery and heists until his crew's failure at the Ludendorff cash depot. Relocating to Sandy Shores, he set himself up as the head of his own criminal enterprise, which, despite problems encountered and enemies made, only became more and more successful, despite the fact that a lot of the meth his company dealt in was stolen from the Aztecas, Vagos or Lost MC, sold back to the Lost as an underhanded f*ck you, and that which they created themselves was cooked up in a place that Michael described as "not really a meth lab, more of a sh*thole where meth is made."
-Revels in violence. Wakes up almost naked in a pile of dead bikers with a hangover like it's normal.
-Not much of a chemist. Has Chef do all the cooking.
-Successful businessman. He looks like a bum but his business could be on the BAWSAQ if it wasn't illegal.
-Bathtub crank stolen from bikers.
-Uses. Swears by his product. Doesn't like weed though because it makes him see clowns.
They're pretty much polar opposites. I think it was deliberately written that way.