Absolutely. Nadal is an aggressive player and he would much more often take full control of the point whenever he gets a position compared to Djokovic.
Djokovic would play 3 times more useless FH shots in a rally compared to Nadal.
Only Federer and Tsonga are players with whom you know that if they get a FH position they would just go for a 2 shot finish of the point. Them 2 and Nadal.
Del Potro and Berdych are close of course, but still a bit behind those 3.
For me the way you handle a favorable or neutral FH position is what defines how offensive you are in modern tennis.
BHs are to defend, S&V and chip&charge are for surprise, serve is a matter of ability, not decision most of the time, finishing the point at the net or with the FH is the same in terms of offensive minded approach, etc.
Both Djokovic and Murray would toy around rather than push things ahead, compared to even Ferrer in this list.
Also perhaps because they both have more security in their BHs and enough stamina to endure the longest rallies, but still the conclusion is the very same at the end of the day.
As often with your posts, I can read some relevant intuitions and some mistakes imo.
Many people are very impressed by the potential power of Nadal's, Del Potro's and in a lesser extent Berdych's forehands, I'm very impressed as well, that's impressive for sure,
... but it's a mistake imo to define the whole player's game by that maximum power potential and that's where I disagree with those people (Lenders does the same mistake for Del Potro imo).
How often do these players really use those maximum power forehands ? not so often because that's impossible to use them constantly.
Besides, tennis is not only about power, it's also a lot about angles, changes of directions, changes of depth or spin, and Nadal and Del Potro are not very good at that imo. That's very important to do that : I remember Nadal praising Nishikori's ability to change directions of his shots. And when you see Berdych and Del Potro, Berdych is less powerful, needs a better position to be able to fully accelerate, but is clearly better to change directions.
As for Nadal, the quantity of spin he uses makes it difficult to be so offensive constantly. Look at Nadal-Ferrer match-up for instance : Ferrer is much more often the offender in that match-up ! He doesn't have Nadal's power but Ferrer's ability for angles and to change directions and spins is underrated imo.
Same for Djokovic's ability for angles and to change directions and quantity of spin ... and also the fact that the backhand can indeed be used in an offensive way contrary to what you say : if you don't consider at all Djokovic's or Murray's ability to attack with their backhand, you forget a lot !
I really think this "maximum power" is given too much importance by many people on MTF.
But something which is underrated on the other side is Del Potro's and Nadal's ability to put their opponent on the defensive with their serve