Games like from the Gundam Battle series (before tuning), the slower Armored Core entries, and games from the BattleTech franchise are more similar to each other than games from the Gundam vs. Gundam series, faster Armored Core entries, or the recent Mecha BREAK.
This latter grouping has more in common with those 3D arena fighters like Dragon Ball™ Z™: Budokai™ Tenkaichi™ 3.