There is a world somewhere between reality and fiction. Although ignored by many, it is very real and so are those living in it. This forum is about the natural world. Here, wild animals will be heard and respected. The forum offers a glimpse into an unknown world as well as a room with a view on the present and the future. Anyone able to speak on behalf of those living in the emerald forest and the deep blue sea is invited to join.
The main differences betweeb lions and tigers all relate to locomotion; the tiger is a typical, closed habitat felid that retains the basic morphology is a specialized ambush predator. The lion is adapted to more open habitats and so deviates slightly from this plan, by being slightly more cursorial. So the two represent slightly different locomotor types among pantherines, with the tiger being more typical ambush predator and the lion being more of a compromise between being an ambush predator like other pantherines, and being slightly more cursorial.
Any differences in "grappling ability" are probably secondary and the byproduct of their different locomotor types. The olecranon/ulna ratio for example doesn't control for the fact that leo has a relatively elongated ulna compared to tigris, and thus a lower value in leo may not represent smaller triceps but rather just a longer ulna. Olecranon/humerus may better control for the distal elongation of limb segments in leo, and more accurateky compare relative size of the triceps, independent of different limb proportions.