Noob question about spread trading outcome

FYT and FIT are One in the same - semantic difference only.

And DV01 variance won’t make any difference intraday

 

?

But those are 2 different spreads with different ratios. For December:
FYT is 3:2
FIT is 5:3

And going back to my main question - I still don't know how it is possible

 

Thank you for the info