The Whites scored an 87th minute equaliser but had chances to score more at Elland Road, including an effort from Bamford which hit the crossbar.
Speaking to Sky Sports after the game, Bamford said: "I felt we should have won. We had the chances and I am frustrated. I am annoyed with myself I haven't scored tonight.
"We are a fit team and everyone is starting to get tired. We rely on our fitness and it showed in the second half."
Asked about the recent Super League development, Bamford added: "Before footballers we are fans. I think the proposals takes it away from that. I think it is wrong. I don't know the ins and outs but from the way it has been portrayed it doesn't seem like the right thing.
"You want to win every game but for me playing in a league you can't get relegated or promoted... it is not football. Football does have to evolve. At the minute I am not understanding how this will help the game.
"Everyone has their rivalries but when it comes to it everyone is a football fan. That is why you have seen everyone come together and just how they have come together shows how wrong it is."