That IS fearless, considering it never has done so before and we're not exactly blessed with an uberslugging team. .
This is a great park for RHH power (IE RHH slugging), but it only surrenders more HR to RHH than LHH because it's so deep to right center and straightaway center. Last 4 years this has been an average park for RHH homers and a park that depresses HR's overall (just less so to LF than to any other field). As a park for RHH to homer in, Fenway's about average among stadiums.
The reason that doesn't mean this is a terrible SLG park for RHH should be fairly obvious. It's an short flight to the left field wall. There's a whole flavor of doubles that can only be hit at Fenway. The wall-kissers like the one Darnell McDonald got that walkoff on last week. Also a lot of blasts that would be HR's in some parks, you know the kind I mean, the low line drive lasers that take about two seconds to clear the outfield wall but are never more than about 30 feet off the ground. Between the two this is, bar none, the best park in the league in which to double.
So what you have right, is that Beltre should get a lot of XBH. Just don't expect more than about 20 of them to be of the long variety, with less than half of those at Fenway