If the 45-100 and 50-105 sets are both D'Addario Chrome flatwounds, the heavier set will have slightly higher tension, but since they're going on a short scale bass, they still won't be high tension like a 50-105 set of Chromes would be on a 34" long scale bass.
You can also expect the lighter gauge, lower tension set to have more bassy-ness and the heavier gauge, higher tension set to have more high frequency harmonic content. It's a common misconception that thicker strings = thicker bassier sound. The physics of tension cause the opposite, i.e. (all composition/construction factors being equal between string sets) lighter gauge results in lower tension, which results in looser vibration and more bass frequency.
I actually found that I really like D'Addario Chromes on my 1970 Guild M-85-II bass, but I use the G,D,A from a 45-100 set, paired with a 110 gauge E string. The 110 is only offered in long-scale (available for purchase as a single string) but works fine on the short scale Guild. The heavier gauge results in a tighter, less boomy E string