system
Given the following post, respond as if you're commenting on Reddit:
human
[Tron Legacy] How much of a threat did Clu's army actually pose to the physical world?

Flynn and son may have successfully prevented Clu's invasion from breaching into the real world, but if they hadn't, would it honestly have been that big of a deal?

First off, Clu's army did not seem to be terribly large.  It'd be hard to believe it would be much over ten thousand programs.  Could a 30 year old computer even support that many programs at once?

Secondly, the weapons of choice seem to be staves and data discs.  Although terrifying in the hands of a nimble program, they don't necessarily seem to have the destructive power of, say, an assault rifle.  Many weapons of choice in the grid seem to be either melee in nature or at least extremely close ranged.

Finally, would the vehicles work had they crossed over?  The grid runs on an entirely different set of physics, and the energy requirements for many of the cruisers and aircraft would be phenomenal should they be taken off the grid.

Should we really be concerned?
gpt
The computer wouldn't have supported them; they'd be real creatures. Living flesh and blood, translated by the digitiser into the real world. Same with the vehicles. They'd be real artefacts! Physical things!

Problem is that while the power grid can support throwing in or out a few people, even with the upgrades that the Maker made to the power supply for the lab it really can't do much more than that. You'd likely have the bow of a ship and one or two really confused new 'people' to deal with.

The Grid is its own world, and the Maker is its god. The real miracle is that a living being came out of it in the form of Quorra. Not quite Anima Ex Nihilo, but not too far off, either.