Weight wasn't an issue in the early days of MMA, but with the high level of the fighters a significant weight difference which Anderson would have over GSP will make all the difference. The extra size & strength will help to keep the fight standing & as good as GSP's jab might be Anderson will destroy him standing.
If he's not prepared to step back up in weight & truly test himself, unlike his previous two fights against guys who were tailor made for him to look good against then Anderson should focus on defending his Middleweight strap, NOT calling out Welters like GSP & Nick Diaz.
compare that to Anderson in the previous picture... that's not an insignificant difference
The mind of the believer stagnates. It fails to grow outward into an unlimited, infinite universe.
There is no way Anderson is weighing less than 210 come fight time, Jones is no more than 230, so it's still 20lbs difference.
GSP walks in at 190, that's been confirmed by him and his trainers so it's still the same weight difference.
YET Anderson WON'T fight Jones but will fight the smaller guy in GSP!
Randy was 215lbs when he had his run at LHW - He was only 220lbs when Lesnar beat him.
Ken Shamrock was roided to the max and only came in a 212lbs when he fought Don Frye.
Like I've already said, both Evans and Hendo come in at around 202 when they fight at LHW.
So, no chance Anderson fights at 210lbs.
He might walked around at 220lbs after a number of his wife's BBQs, but he is not in fight shape at that shape.