I don't think Varejao is all that good of a rim protector, he's a good positional player but he doesn't provide much protection vertically. KG and Bosh were important because they are bigs who provide the majority of backside cover, horizontally and vertically, with their length and versatility. Lebron may be the rangiest defensive player, but how often is he rotating in the paint? I feel with Love you need a very strong rim protector to complement him, Varejao isn't that guy. With Wiggins, you allow yourself another excellent wing defender who can force the defense into their 3rd, 4th, 5th options while also making your rotations that much quicker, and you allow more salary flexibility in order to find that strong rim protection.