head to head
Helldivers 2 asks more than Total War: Shogun 2, and the gap is variance.

Optimization · Practiced Mastery
Top-tier co-op shooter against bug and bot hordes.

Optimization · Practiced Mastery
Mastering samurai unit cohesion and clan-specific economic chains across feudal Japan.
Helldivers 2 leans Optimization (Practiced Mastery); Total War: Shogun 2 leans Optimization (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Helldivers 2
Recoil, stratagem inputs, friendly-fire aim
Total War: Shogun 2
Samurai unit micro, zen arts timing, and castle sieges reward sharp play
Total War: Shogun 2 leans a little harder on reads, though the gap is small.
Helldivers 2
Enemies scripted, no adaptive opponent
Total War: Shogun 2
AI daimyo follow scripted clan doctrines; human opponents require reads
Helldivers 2 leans clearly harder on variance.
Helldivers 2
Patrol spawns and modifiers shake missions
Total War: Shogun 2
Metsuke agent skill rolls and random farm yields add moderate unknowns
Total War: Shogun 2 leans a little harder on optimization, though the gap is small.
Helldivers 2
Loadout and stratagem synergies deep
Total War: Shogun 2
Clan-specific mastery paths and trade port chains are the core solvable layer
A matching score does not mean a matching test. Two games can both sit at 10 on execution and demand completely different things of you - which is why the reasoning above matters more than the number beside it.