I know nothing about bike specs but a few tips for a first road bike:
There are loads of variables with road bike setup, including things like bar rotation, lever position, the depth of the drop on the bars, the length of the forward bit and so on.
Saddle position fore/aft and tilt also make a huge difference, as does saddle – you spend far more time sat in it.
So if you can’t use the drops, your shoulders ache, your neck aches, your knob goes numb etc etc, don’t just give up – spend time fettling the position. You can adjust the positions of the levers a bit just by loosening them off and pushing against the tape, but if you need to move them more you can undo bar tape and re-wrap it a number of times. Just pay attention to how it comes off to put it back on.
A new cheap bar with a different shape could also make a difference – I have one road bike and a collection of (3) drop bars that I went through to get mine right.
Also if you switch between road bike and MTB over intervals of a few weeks each one will feel weird and short/long when you get back on it. Be prepared to deal with this 🙂