Originally Posted by chaadster

Yeah, I just double-checked my gear selection and warmed it up for 6 minutes, rode is steady for another 3-4 to watch the numbers, and the 53x19 at 88rpm is in the 210-220w range.

That's probably on the low side of the TR curve prediction by 10w or so, so if we take your average 10w spread range as 285-295w (which is on the high side of that same curve by 40w or so), that shows a huge swing for Fluid2, in which we must account for setup (tire psi, roller pressure, tire size). I mention the range on either side of the TR curve because the sample set used to generate it was much larger than our two!

So yes, I agree with your assessment that the OP should really get a power meter on his to generate a baseline power range, because an 80w swing is too wide to take seriously.