They were okay.
Your friend doesn't really "****" with Fox, it's just when you were DK you let him pressure you far too easily, and missed out on a ton of openings. When I watch the best players play, I barely see any openings let alone the ones they find on each other, but in these matches I could pick out many that were missed that could have been taken advantage of.
Also if you play DK really gay you can end Fox's stock pretty quick with grabs and simple edgeguarding
Still some decent moves, but jumping in blindly fairly often. Also the pika was doing really unintelligent and unnecessarily risky edgeguards. Leaping off the edge to edgeguard with pika is also not an absolute rule, and you also need to predict where your enemy is going to be. Often a simple fsmash at the ledge or a ledgehog will suffice and sometimes actually works better than other edgeguards.
Also both of you use the Z-roll FAR too often, it leaves you really vulnerable and characters who are fast like pika and Fox barely need to use it. It's more of a situational tool than an absolute rule of when to use it. Especially in that DK/Fox match, if DK starts z-rolling around close to Fox, Fox can simply chase it and resume comboing.
Fox's lasers are a b-tch for DK though, no doubt.
Keep playing smash64! Keep it alive on console!
Cheers