Why are bodybuilder's arms so much skinnier than Pro Wrestlers?

Is it simply the fact that Pro Wrestlers are usually 10 or 12 inches taller than Bodybuilders and have very long arms and wingspans over 7 feet? I notice that even the bodybuilders with supposedly big arms like Ronnie Coleman are actually manlets and actually have pretty small arms because you have to consider how short their arms are to get a true estimation. For instance, a tuna can may seem thick, but a paint can is FAR FAR greater in circumference in reality.
Here are just a few examples. The Hulkster, Don Muraco, Kane, The Warlord, Big Poppa Pump, Jeep Swenson, Ted Arcidi, The Great Khali and Ice Train.
Don't try to use a photo of one of these pro wrestlers when they had skinny arms because it was after they couldn't lift because of an injury or something. It won't work. I'm talking ONLY about them at their peak.
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More attachments here due to 6 attachments per post limit.

Misc. is a better place to farm negs.

In proportion to the body size/height, they don't have bigger arms, and if you remove the fat + water theyl have smaller arms compared to BBs.

Not one striation was seen that day anyone can look big bulking how many can still look big at 5% bf like lee priest

[IMG] https://i.imgur.com/vVduX8z.jpg[/IMG]

[IMG] https://i.imgur.com/SaAuhRB.jpg[/IMG]

even with the same amount of muscle some amount of fat makes your arms look bigger (but less defined!)