Reading stuff like "he'd destroy Struve" surprise me. There is a tremendous difference of power behind moves at MW and HW. Silva has great kicks, but trust me when i say the guys Struve is used to getting kicked by have vastly more weight & muscle behind every move than Silva's body would ever allow him to produce. And trust me when i say Silva's NEVER been kicked as hard as Struve can - not in training, and definately not in the ring. Not to mention some of the most powerfull weapons of Silva, headkicks... well, he's not gonna reach, is he? While Struve barely needs to lift his leg to reach Silva's head.
And if it goes to the ground, the same thing applies - Silva has the better technique, but Struve's game is at a high enough level that the gap in raw strenght would allow him to power out of anything Silva could throw at him, and we've all seen Struve submit heavyweights, recently breaking an arm like a twig. I'm confident his technique is at a high enough level that if he can lock on a submission he can finish it through raw strenght, despite Silva's superior technique. Struve isn't a 1990's striker who'se never seen a submission before.
People have been wishing Silva to step up to LIGHT heavyweight for a long time now, particularely now in the Jones era, but he's too smart to do that. He KNOWS the bigger his opponent, the less likely his superior technique compared to anyone on the planet will enable him to dominate the contest, especially in today's MMA game where anyone at top level knows how to defend against the techniques that would have allowed Silva to contest at heavyweight 20 years ago. Any succesfull technique is a combination of strenght and technique. To put random numbers on it: at middleweight silva's technique is at 140while the second best is at 100, and silva's physical prowness is at 80 while the best is at 100. At light HW those numbers shift to 140/100 vs 65/100, at HW to 140/100 vs 50/100.