The Brutal Nightmare would be a much stronger ball than the Nitro R/2. Not knowing your ball speed, normal area of the lane you play, or the house conditions; I would think that a Marauder Madness or Diva would be a better ball to ease back into a league. Or in the Brunswick line, a Meanstreak or a Meanstreak Brawler. Let me know if you have any additional questions.

The Brutal is one of the more aggressive, albeit best, balls on the market.  The entirety of the DV8 line seems to have similar reaction characteristics with varying degrees of aggressiveness, meaning you can get a ball that acts similar to the Brutal with a lower hook potential.  I would echo the suggestion on the Diva, it's one of the better benchmark balls I've seen in a while. 

You assume correctly.  If the guy in the video is throwing a similar line as you do with a Nitro . . he's got tons more oil than you do, guaranteed. 

@Gizmo, he is on 38' THS using 26 Units of Oil. Curlie Becton has a similar line as I do.
Link to the video, he starts around 2:06 in the video

http://www.youtube.com/watch?v=6FNZy2-tqr4