Very similar bikes but the Triumph does look a lot better, upside down forks with more aggressive tires, basically in the end it all comes down to a thumper vs twin. Neither one will do much of anything off-road, with these I might do gravel roads, dirt road depending on conditions, grass fields and that's about it for me... for really anything off-road you should be looking at the V-Strom, Tiger, GS, etc...
IMO Triumph should've just taken the 900 and miniaturized it. Overall I'm happy to see the manufacturers bringing out these smaller displacement bikes for beginning riders and Triumph didn't have anything for that segment.
I haven't demo'd Scramblers yet but all the other Triumphs have been spot on and I'm sure this one will not be any different. For me if I owned one of these it would be for around town or hitting some back roads on the weekends but would make for an excellent choice as a commuter.