i find my ARC to be slightly more aggressive than the DE89, slightly less aggressive than the Merkur 38C
Update 3 - Today I did a comparison shave between the Weber DLC and Feather blade to my Merkur 333C and Gillette Super Thin blade. Instead of using the very slippery Trumpers shaving cream (my personal favourite) I used something more standard, namely Cade soap from a puck.
The results this time were quite comparable.
Perhaps the Weber DLC just doesn't go well with Trumpers cream.
Regards,
Renato
Interesting results, I wonder why you got such a differing result.