I've noticed that Disney has it better when it comes to height restrictions. To prove my point, I'll point out similar attractions from Disney and Universal that have height limit.

Example 1: TOT: 40", but could easily rise to 44" or even 48". Dr. Doom; 52".

Example 2: Kali River Rapids; which has a 30 foot drop gets 38". Popeye and Bluto; 42" but the biggest drop is probably 18-22 ft.

Example 3: Expedition Everest is 44" but goes down a backwards drop 80 ft in the dark. Revenge of the Mummy; 48" but the biggest drop is 25 ft; it's just the launch that makes the drops big.

Example 4: RNRC; 48" but it goes 60 mph in launch and in the dark and upside down 3 times. Hulk launches at 40 mph and goes upside down only 4 times more but gets a 54" height limit.

Example 5: Buzz Lightyear shoot em' up gets no height limit. MIB which is quite similar and only has a few spins and a "scary" ending gets a 42".

The only Universal ride I'd argue needs a bigger height limit is Dudley Do Right which deserves a 52" height limit. Also if Universal made a ride like Test Track; it would get 46". And Mission: Space... totally 51".

Are height limits biased to Disney? You decide.