[Captain Snooze]

Originally Posted by qqzj

I am curious why the Grimmspeed bar is so different from all others. Other bars hold the top three studs on top of the struts. The one is attached by the studs for the diagonal bars. This will make the bar lighter for sure, but grabbing the three studs might provide more rigidity. Does it make sense?

No.
The clamping force exerted by the two diagonal bar bolts is enough to tie the two towers* together. That is, using the three bolts you've suggested is superfluous.
See this thread for development.



*No relation to Tolkien