Kon-el smash's them, he just flies up and heat visions them to death! Or TK's the symbiotes off their hosts and sends them into space then heat visions them!
If the speed advantage wasn't what it was this might (read: small chance) be a decent fight.
the strength and durability advantages of Superboy however, not to mention the versatility (also being able to heat vision and sonic clap) have me leaning toward Kon-el
You can throw millions of venoms at superboy and it still wouldnt matter. They can't hurt him. Besides, anyone that went two rounds with superboy prime and died saving the universe deserves more respect than to have a bunch of second rate symbiotes throw at him. Toxin isn't even an issue. Conner burns him away.
Venom can only hit so hard. He's a class 20 max. That won't even register to somone with a TK shield and superman-ish invulnerbility. Venom is vulnerable to two things that SB can generate at will: heat and sonics. They won't even get close to him especially with that speed. Granted the millions is an exagerration, but still. Do you think any number of venoms can take down superMAN? Superboy isn't that far below clark if he operates intelligently.
From your previous post it seems that you believe that if SB is just gonna stand there and watch million Venoms wouldn't still be able to hurt him. That's just funny. Even one Venom could hurt SB if he would just stay and not resist.
And Venom is higher than class 20 and this is just not the main thing at all. Venom proved that he is durable enought to take class 100 punches and also proved that his own punch is harder than punch of many heavy lifters.