No. That's a VERY good question. You're probably talking about a GM product. They're built out of very thin metal and do bend. Even their 6.2/6.5 had ones that usually bent when used. These are different. They are actually very safesince they are built heavy enough to pull the engine out. We used to carry complete engines around while hanging off of a forklift by using these hooks. The strater bolts are all three the same. I think that they're the same thing as the factory ones used on gas engines such as a 302 for example. Yes, the one on the top is a HUGE PITA to get out sometimes. I always break the lower ones loose then completely remove the top one. This helps to keep all of the starter weight from hanging on this difficult bolt. If you drop it on the top of the starter, don't worry. It will probably fall on your face when you drop the starter out. Experience talking there.
When you install the starter, I would get all three bolts started first. Then, while holding the starter up in place (again to keep the weight off of it) tighten the top bolt first. You can usually run the bolt almost all of the way back in by hand using your socket and extensions. Then tighten it up and then the bottom two. What I do next is to hit up on the bottom of the starter using my hand. Do this once or twice. I do this because one time, when we tried to start the truck after installing a reman engine, it wouldn't start. I had to crawl back underneath to look at the starter. I noticed that it hadn't been pulled all of the way tight on the top even though the bolt tightened up. I hit it with my hand a couple of times and it popped upwards. Them I tightened the top bolt all of the way and there wasn't any more starter issue.