Its a tough one because on one side you have an exercise that you are lifting your bodyweight in a vague ROM, there is no absolute beginning or end, each rep goes a slightly different distance. Also, Dips are very similar to a decline press in terms of the movement pattern, which for most people is a very strong direction to push in.
Depending on your grip width and elbow placement on the bench and dip you can be using varying degrees of tricep and chest. The main thing is form. If you are doing dips with a moderately wide grip to the point where your upper arm is parallel you are doing much less rom than on a typical bench press IMO. There are so many different factors.
But in general I would say that number 1 you probably dont weigh that much prob around 170 or less and in that case the numbers arent that out of whack really, you just need to make benching a priority and practice it if you want to make it a very good lift.