Argon 18 e119 and e119 PLUS, aero savings

So the e119 gives 9.8% over the old e118 and the e119 PLUS gives 14.89% improvement

how comes, same frame from what I understand, only difference is storage box and bottle on the PLUS model, am I right, the sotrage and out front bottle adds 5% more aero savings.

ta
https://www.i-ride.co.uk/2016-E-119-Tri-Ultegra-6800-Bike.aspx
https://www.i-ride.co.uk/2016-E-119-Tri-PLUS-Frameset.aspx

It’s not the same frame as e118.

re read post. I know that I was aksing why/how the delta between the 2 versions of the 119 and the 118
There are TWO 119 models

So the e119 gives 9.8% over the old e118 and the e119 PLUS gives 14.89% improvement

how comes, same frame from what I understand, only difference is storage box and bottle on the PLUS model, am I right, the sotrage and out front bottle adds 5% more aero savings.

ta
https://www.i-ride.co.uk/2016-E-119-Tri-Ultegra-6800-Bike.aspx
https://www.i-ride.co.uk/2016-E-119-Tri-PLUS-Frameset.aspx

Good question.

I’d like to add how the e119+ (and e117+) compare aerodynamically to the Cervelo P3 or Felt IAx. Does such data exist?