Tried both them on and seemed like the best fit of all the boots I tried...slight slight roomyness in the 100mm last, but i havent seen a narrower boot than a 100mm with a flex rating of 95 or lower.
So I liked both the boots alot and from what I can tell there is no difference between them except for the liners. (even though on the nordica website the description/spec sheet of the hot rod 95 has disagree whether it has a performance and comfort fit liner. (They basically cut and pasted the other products description lol).
Both boots can have a 95 flex so I was wondering if anyone knows of any nuances between the two that I should be aware of.