AG has definitely played well, but he's had some not so stellar plays as well. Truly though, AG came in with a goal in mind and he was only going to achieve that by going balls to the wall. Established guys don't have that motivation in the pre-season, do it's hard to compare, imo.
If I am JB and I have a plan for how I want my team to look and play coming out of the off season, I ask myself has AG really done enough for me to abandon that plan completely? For me, as thrilled as I am with AG, I still stick with my plan.