No, he is a VERY different person AND a very different fighter.
He faced a very serious illness and is clearly sobered by it.
On the other hand, his timidity in striking is not quite a 180, but very different from what we saw in his 4 UFC fights prior to his long layoff.
In his first 4 fights, he didn't back up at all. He stood toe to toe and exchanged, usually coming out ahead.
In his last two fights, he runs for the hills at the slightest contact.
These are two different people.
Dude his first 4 fights were against Herring, Couture, Murr, and Min Sook (or somthing).
Clearly he did not have anything to be afraid of in the stand up department vs Mir. Couture has barely ever shown punching power worth considering (most of the time if he is putting you in danger froms trikes he is on top of you). Herring is another submission fighter.
His last two fights were against a knockout wrecking ball in Carwin, who probably hits harder than anyone in the UFC, and Cain who finished every single opponent he had via strikes except one.
Seriously your argument, and anyone else who thinks Brock has "changed" since the illness, is nothing but pure speculation. You have absolutely no evidence or logic to back up why you think that other than a perceived difference in performance that is actually a result of him fighting strikers (crazy talk!).
What makes more sense given what we know? That Brocks illness made him become a timid fighter, or that he didn't want to strike with strikers.
A wrestler who didn't wanna strike with two guys that have been koing there opponents left and right and instead wanted to wrestle? Ya your right...must have been getting sick...