These not only look incredibly similar to an XP-G, (although they clearly aren't exactly the same) but seem to give almost identical performance according to the specifications.
Forward voltage = 3.0v
Lumen for 5000k = 512 @ max 1500ma current (70 min CRI)
Lumen for 2700k = 448 @ max 1500ma current (80 min CRI)
Viewing angle 125 degrees
Just a coincidence? Maybe I've missed a distinction somewhere..