Not the same but similar.

I had a 2011 Madone 4.6 and upgraded to a 2015 Emonda SLR. It was a huge expenditure, but well worth it. I've ridden a Domane SL and was not impressed compared to my SLR.

If you can manage the finances.... DO IT.

And keep the old bike for rainy and wet days. It will make the new bike last longer.