It is tough to compare xcel and JO levels, but I'll try my best. XD is around levels 7-9, leaning toward the level 7 side. This is because the minimum requirements are close to 7 and the maximum skills allowed are close to level 9. For instance, I would say that the floor requiremnts are about level 7.5 because it requires a B tumbling pass. I would also say XD is around a level 7.5 on the minimum vaults. Beam and bars requirements are close to level 7, with exceptions such as less stringent casting on bars. One could argue diamond can be up to level 9, because 1 D skill is allowed per event, and unlimited C skills are allowed.So what level would Excel diamond be equivalent to?
At my gym, if you were to take the diamonds and place them into JO levels, some would go to level 6/7 and some to even 9. Most diamonds in the country are close to a level 7.