Board Thread:General Discussion/@comment-24976116-20140418054443/@comment-1352718-20141116212211

I'm pretty sure according to all cited Derrick answers on the Ben 10,000 character and its timeline has only mentioned that Ben will become Ben 10,000 and that changes/discrepancies are very subtle because time is always changing. I don't think he has ever outright said the OS Ben 10,000 is what Ben Tennyson (Prime) is going to be other than he will become the Ben 10,000 depicted in Ben Again (who wears attire similar to OS Ben 10,000).

So Ben mutilating Vilgax happens at age 20 instead of 15 is an obvious sign that OS Ben 10K and OV Ben 10K are slightly different. It can be considered that OV Ben 10K Timeline is nearly identical to OS Ben 10,000 with some subtle changes. ie. Kevin is good, Vilgax being mutilated later on, Ben 10K uses Biomnitrix instead of Omnitrix, Ben 10K (OV) is less of a strongheaded jerk than Ben 10,000 (OS) as shown in Let's do the Time War Again, etc.