Amazing comparison (700+ pages!) of PDE solving. There's a gap to be filled

Question of NDSolve limitation: are there any major ones? (Neil Singer, AC Kinetics, Inc. gave a great answer as to what is underlying - the underlying components are not hidden they are available to read)

I did not get past the first few of 700 pg. However I saw some inconsistency.

(1) maple cannot do arbitrary precision so it cannot answer “the same questions” mm is

(2) mathematica was counted as “incapable” due to time of solving - which does not mean it cannot solve (it)

(3) in the maple column unsolved integrals were “allowed”, but apparently not in mm’s column