I wrote this up in another forum but it applies here. Picture a goblin. On paper it says 3hp, spear (d6), reach, intelligent, organized.
Now you can totally make that goblin into fodder- it's got only 3hp, no big deal. You can also make it a crazy fight, describing how fast the tiny thing is, how it tumbles around and keeps the PC at arms length with its spear, fighting dirty, using crawlspaces and dirty tricks like biting and shrieking. By using harder moves, any creature can become a fun challenge.
Conversely, if you make it a dumb creature that charges blindly and doesn'tmanuever, suddenly it is a total mook. The way you play your monster has way more effect than the sparse stats on the sheet.
Hope that example helps a bit!