Why are execs considered so high tier when it's ugly as shit

Steaming Juju(1.7)+Miami Topper(1.5)

http://www.tf2outpost.com/trade/20658068

http://www.tf2outpost.com/trade/20009369

3.2*0.9=2.9

Disco Whirly (4)

http://www.tf2outpost.com/trade/20257658

4*0.9=3.6

Super outlier (2 months ago anyways, almost outdated)

GE Hermes(3.5, super outdated)+O.Fire Mancer (4 after update, 2.2 before update)

http://www.tf2outpost.com/trade/20063971

http://www.tf2outpost.com/trade/19405013

Hermes is very outdated (too low, sold for 80 keys 2 months ago) and unclear whether mancer is sold before or after update, and even if I take the low, (3.5+2.2)*0.9=5.1 is still a giant outlier anyhow.