It looked less of a wheelbarrow and more of a flat landing with pretty much all wheels touching together. I'd go 3.5/5. Good thing is you recognised it was not right
I fly the Katana and its a pretty slippery plane and easy to add 5kts or so of unnecessary airspeed
It also looks like you just forgot to flare....or perhaps it just happened to quickly, which goes back to my thought, you were just a bit too fast
Make sure that stall warner is squeaking as you flare
Would have been a 1/5 if it was a B-52!