@davidflanagan I wasn't able to look closely at your perf last Friday, since I was mobile when you posted it, but #8791 reminded me to go back and review it more thoroughly. The change you made has two issues:

1. Measures the cost of cloning
  - Needs to be measured alone in a separate perf test so that we can accurately reason about its impact
2. Measures the removal of detached elements
  - This just doesn't match reality, the tests should measure the operation as accurately as possible


Please review:


1. Updated perf test:
  - http://jsperf.com/child-removal-deathmatch/9
2. Fixture resetting: 
  - http://jsperf.com/innerhtml-fixture-reset-cost