[kiddo]

If a VPIP 25 plays 100 hands he has seen 30 pots (big blind for free) and paid, lets say, 25BB.

If a VPIP 60 plays 100 hands he has seen 65 pots and paid, lets say, 50BB.

The difference in winrate between VPIP 25 and VPIP 60 is not 25BB/hour. The loose player wins back most of the money he spends preflop (even with trashands as 96s).

Of course there will be some extremly bad players that actually lose more postflop then they spend preflop. But they will not play the game for many hours unless they are extremly rich.