I figured he may make for a better protector and is huge size would make it more avoidable to predators because that’s a lot to carry off and not get caught up with the dogs outside.
Well, not necessarily. Depends on the predator, really. A small gray fox may be reticent to take on a bird that size that seems ready to stand up to him, however, a bobcat wouldn't hesitate and neither would a roaming domestic dog or coyote. A friend had a 12 lb OrpingtonX rooster snatched from her front porch without a sound, not a feather dropped and we've decided that it had to be a bobcat to not alert all the other roosters on her property. Later, one was sighted nearby.
Basically, a rooster is there to be a sacrifice for his hens, to hold off a predator so they can get to safety, but most any rooster would be killed, no matter his size. That is their job. Some do it better than others, but most are willing. I only know one rooster who has had run-ins with coyotes, foxes, hawks, roaming dogs, etc, and lived to a ripe old age. Now, all he does is attack the goat at his retirement home, LOL. Not many Robo-Roosters like that around.