You, yourself, just separated them. Gameplay and experience. Yes graphics enhances the experience. The gameplay is the same regardless. Same thing with faster loading leading to a better experience. The gameplay remains the same whether it takes 10 minutes to load a level or 1 second to load a level. The experience, however, is far better if you don't have to wait 10 minutes. The gameplay itself is still the same.
Just like Deus Ex PC has the same gameplay as Deus Ex console. Original Deus Ex, not the new ones. However, the experience on PC was far better because the levels were larger leading to a more cohesive "experience."
Regards,
SB