I used to think that Hood was better equipped than Hayward to make the jump from role player to go-to guy, because Hood seems to have a better shooting touch. But Hayward clearly worked so hard on his game and his body during the offseason that he was able to make that jump (although his athleticism is somewhat lacking still). Hood, on the other hand, seemed to be basically the same player but now has been plagued by injuries. That is certainly not a good sign coming from a still-young player and it is somewhat worrisome.
Regarding the comparison in question, both Hood and Miles are offensive players that rely heavily on shooting rather than driving or posting up. So, in that regard, is not a completelly nonsensical comparison. That being said, Miles was a lot less effective while playing for the Jazz. He started at the age of 18, but even if we take into account only his last three seasons as a Jazz player, when he was 22, 23 and 24 - which are Hood's ages while playing for the Jazz - Miles is not on par with Hood. Let's see:
Miles (22 years old): 19.2 FGA/100 possessions (13.5 FGA/36 minutes); .515 true shooting; .341 3P%.
Hood (22 years old: 18.7 FGA/100 possessions (12.7 FGA/36 minutes); .529 true shooting; .365 3P%.
Miles (23 years old): 24.1 FGA/100 possessions (16.4 FGA/36 minutes); .507 true shooting; .322 3P%.
Hood (23 years old): 20.2 FGA/100 possessions (13.8 FGA/36 minutes); .542 true shooting; .359 3P%.
Miles (24 years old): 21.3 FGA/100 possessions (14.6 FGA/36 minutes); .484 true shooting; .307 3P%.
Hood (24 years old): 22.2 FGA/100 possessions (15.2 FGA/36 minutes); .528 true shooting; .365 3P%.
So, even though Miles was really really really really really — and I can't stress this enough — inefficient as a shooter, he dared to shoot a lot. He shot so much that in two of the three seasons he shot more often than Hood, who shoots a lot.
One may argue that Miles, despite his absolutelly atrocious true shooting percentages, had value for his three point shot, but even that is inaccurate, since his three point percentages were awfull too.
In conclusion, the similiarities is that both are shooters and not slashers or post players. Also, both had a high usage rate for role players, but Miles in general dared to shoot more often and with disastrous results, while Hood has been able to maintain a fair level of shooting efficiency.
I rest my case.