P1 Mono-Purple vs P2 Mono-Red
I think as Purple you want to pressure Red with units, but heroes could be dangerous. Because of how much haste/burn Red has it’s very easy for them to spend cards and their extra gold to snipe your hero. In this matchup I would favor units with high toughness (that are also generically good) like Fading Argonaut and Hardened Mox. It can be difficult with some starters to apply pressure, sometimes you don’t get a good draw for it especially in Blue and Purple. You still have an advantage and can punish early teching from the red player. Nullcraft of course is very good at finishing things off or getting a crucial point of damage on a tech building. For early tech, things like Gilded Glax can get you a lot of value and are resilient to removal and burn the Red player might try and use. Tempo plays like Stewardess of the Undone are also situationally very strong.
I think this is what I was saying, it’s about +5 gold for P2 on average, though depending on how aggressive P1 is, scavenge bonuses could make that higher.