Fitting dynafit vs la sportiva ski boots

If I am a 28.5 in a La Sportiva Spectre, am I 28.5 in a Dynafit TLT7?

I'd appreciate any advice.

Thanks.

Only have experience in the 27.5s but I felt both were the same length. I felt the Spectre had quite a bit more volume in the heal and instep but my toes were both just grazing the shell of both boots. 

Thank you! Very helpful.