Agree with the Woodley analysis. Not so much regarding Whittaker. Rob was a WW prior to moving up to MW, which makes him a smaller fighter in the MW division. SInce GSP is already talking about going back down to WW, he will lose some mass while gaining speed and better cardio, he won't need the extra Lbs not dealing with someone the size of Bisping.
Whittaker earlier in his UFC career didn't have the wrestling TTD he has today. Big part of his improvement was his moving to TriStar, rolling with GSP and being coached by Firaz and company. This did help The Reaper immensely, however Firaz and GSP know RW's wrestling better than anyone, thus knowing his wrestling and grappling weaknesses better too. No way GSP showed him everything he knows. IMO this IS a big advantage for the NEW MW Champion. TriStar is extremely good at getting to know their opponent and coming up with the right game plan to expose and win, knowing the fighter well helps even more. Rob has great striking but Freddie Roach will figure out Whittaker's flaws and build a path for GSP to counter them, similar to how Freddie figured out Bisping, developed the combo which put him on his ass.
In NO way do I think this will be an easy fight. A quicker, smaller GSP with a better gas tank, Georges will be a better version than we saw at UFC217. Not to mention after four years away, being outside the Octagon for so long GSP will now feel more comfortable in the cage, have his timing back and nerves gone. This fight will hopefully remind the critics just how good GSP is and to quit doubting him. No other fighter has won against every fighter they have faced in the Octagon. GSP may have lost twice in his long UFC career but erased both losses in the rematches (both finishes). NOBODY else has EVER done that. MM and Jones still have yet to avenge their losses.
GSP will entice Rob into coming forward (Rob already said he thinks GSP has slowed), will go for the double leg and take The Reaper down at will. From their GSP will set traps and Choke the Aussie out.
The greatest WW of all time ALWAYS gets the job done.