It's hard to put a objective analysis playing FM for 15 years+, but there's no competitor to it, other games in this genre try to copy FM but the only one that comes close is OOTP and even OOTP suffers from many problems like mods, UI and others.

FM is incredible and even if they don't change a lot of things from one year to another, the pleasure to take a small team to the championship will always be terrific.