I think Canelo would win. I disagree that Chavez Jr would be bigger by 15 pounds. Jr. comes into fights at about 170. Canelo walks around at 170 so they would be the same weight on fight night. Now skills:

Boxer- Canelo

Ring Generalship- Canelo

Power- Wash

Chin- Wash (Although Canelo is yet to be tested on the chin like Jr.)

Speed- Wash or Canelo. It's close.

Endurance- Wash.

So I feel that Canelo would win by UD.

Canelo by UD. Chavez jr has no style and is being forced to go up to super middleweight

If he can avoid being hit the way he did with Trout then I would say Alvarez by TKO. Martinez was able to hurt him a few times with a broken left hand. Alvarez is stronger than Martinez and hits hard to the body. He is more skilled than Chavez Jr.

Canelo would win

I would say manny pacqioau because he has his own cologne and I use the cologne for lube when my jeans zipper gets stuck.

Chavez. Simply because he is too big.

Chavez Jr has the advantage of height around 4-5 inches, overweighs him around maybe 15-20 pounds, and has a iron chin. Canelo has the advantage of skills and speed, and ring generalship. Punching power I would say maybe probably equal, so who you think would win ? I say UD by Canelo, but it would be a war.