Gen's not a total idiot, no, but a good chunk of his fights consist of Kengo telling Gen which switch to use or Gen fumbling through 3 or 4 different ones before getting an effective one.

Gen has the power to beat Blade and Knight, but Gen is just a bit too straight forward. His strategy kind of boils down to "Running at him with Claw didn't work? Let's try running at him with Spike!", especially with the kinds of switches he has (Beat, Stealth, Ice, Net, Stamper, Pen/Ink (Forgot what it was called), Hopping, etc).

Even with Cosmic, he rarely uses creative combos, just using the amplified switches inserted in the sword or the combos are kinda just, blah.

The only extremely battle heavy switch idea that Gen's come up with without Kengo's help to me was his recent Claw-Chainsaw-Spike-Scissors combo. That was brutal. I'm sure that Fire-Launcher-Gatling and Magnet-Launcher-Gatling could be devastating against Knight and Blade, if we ever actually saw them hit their targets

The problem with the Claw-Chainsaw-Spike-Scissors combo is that it's just a more brutal version of "Run at him with a bigger stick" strategy.
The more dakka combos were awesome to see, but Knight has experience with Zolda. I think he'll manage :lol

I think of Ren could live through End of the World, he can survive those two dakka Limit Breaks.

Also just throwing this out there. Al list of the cards that Blade has access to, for those that haven't watched the show:

A - Change Beetle [Allows transformation in KR Blade]
2 - Slash Lizard [Boost the power of Blade's Blay Rouzer.]
3 - Beat Lion [Boost the power of Blade's punches.]
4 - Tackle Boar [Boost the power of Blade's tackles.] (not used very often lol)
5 - Kick Locust [Enhances Kicking Power]
6 - Thunder Deer [Lightning Elemental Attack]
7 - Metal Trilobite [Gives Blade to transmute his body into organic metal to protect himself.]
8 - Magnet Buffalo [Gives Blade control over magnetism to a limited extent.]
9 - Mach Jaguar [Gives Blade a boost of speed.]
10 - Time Scarab [Gives Blade control over time in a limited radius.]

Though I think these are only used to change in Jack form and King Form:

J - Fusion Eagle [triggers Jack Form when used with Queen. Grants ability of flight]
Q - Absorb Capricorn [used to trigger transformation with Jack, and King cards]
K - Evolution Caucasus [triggers the Evolution King Form transformation when scanned with Queen]

Some basic combos:
6+5=Rider Kick.
6+2=Lightning Slash.
6+5+9=Lightning Sonic Rider Kick.
1+2+3+4+5+6+7+8+9+10+J+Q+K= Royal Straight Flush Slash

Just going off a list and basic memory. And again, just to inform the people that hadn't seen blade what his base stuff was.

Knight all the way. Fourze and his goofiness don't stand a chance against either of these 2. Their skill trumps him every time. Blade versus Knight would be one hell of battle that's sure. I think it would even be something that would come to both of them dying but I Knight would win. His skill, determination, and power are right up there with Blade. But Knight is also more cunning and ruthless.

I voted for Blade. Fourze's too unskilled to handle his fighting style and overall Blade has a better arsenal. Cosmic may save him, however he lacks creativity to properly use the Switch Combos.

Claw-Chainsaw-Scissors-Spike is going to be his trumpcard in close range battle,but getting in close is going to be difficult.He's not fighting his childhood friend with this, he's going up against two experienced warriors here.

Knight is Blade's toughest matchup, but his lack of opinions is going to hurt him in the longrun.

I've gotta go with Blade for King Form.

Im gonna have to go with Fourze. He has the most variety in his arsenal.

It's currently a tie between Knight and Fourze!