Because the chance of it being intentional is much higher, the penalty for the outcome should be more severe? This still makes no sense.
The penalty for a deliberate t-bone should be a sin bin, it's (nearly always) the case that a reverse t-bone is a deliberate t-bone. It shouldn't be an automatic sin-bin (as Ray stated) as there may be a weird play going on, or two bikes moving very slowly, etc, but for the most part a reverse t-bone is an easy call.
The penalty for a deliberate t-bone should be a sin bin, it's (nearly always) the case that a reverse t-bone is a deliberate t-bone. It shouldn't be an automatic sin-bin (as Ray stated) as there may be a weird play going on, or two bikes moving very slowly, etc, but for the most part a reverse t-bone is an easy call.