It's heavier by around 500-600g, but other than that I don't think I could tell the difference. It's been my race bike all season and I love it. The Tarmac is my normal everyday riding bike mainly for the setup/position. I just upgraded it to 12sp Di2 which is why the 11sp went on the 168. Basically, I went weight weenie and comfort for the SL7, while this bike is my "cheap" race bike. I wouldn't describe it as sluggish at all. For reference my FTP is around 330W with a sprint around 1,600W. It doesn't hold me back.
Thanks for the insights! Also great to hear you have some racing background to back up your opinion.
How would you rate the aero-ness of the 168 compared to the SL7?
I offen hear that Specialized nailed the aerodynamics in the SL7.
As the 168 is identical in geometry and very very similar in appearance (although not the same, as the genuine seatpost does not fit), I hope to get the same aerodynamics.
But its very hard to judge the tube shapes from pictures. Especially the tube widths (e.g. downtube width from the front perspective).
Could you notice any difference in tube shapes and the aero profiles?
Thanks a lot, Eddy!