On the computrainer the weight does virtually nothing. Because you were riding courses it simply affected your speed/time.

FWIW - most "real" TT'rs here in the Chicago area don't do Indoor TT's on the computrainer because they are constantly pissed seeing guys they normally stomp outside be close or even beat them on computrainers.

What are you hoping to learn or find out from the session? The power you put out over the time you put it out is accurate as long as it was correctly calibrated before starting (coast down test). the weight put into the system is meaning less for that.

If you're wanting to know if you could beat others at the indoor TT well....it's kind of meaningless. If you want to know if you can beat them in the real world...only real world racing will tell you. If you want to know something about your power output then you have it.