If you also pay attention, you know that the colossal titan's only advantages are its sheer size and ability to kick in the wall. It is also slow as all hell, as exemplified by how easily Eren was able to outmaneuver it when it attacked the walled city for the second time. If you also look at an image that shows the entire Colossal Titan, you'll see it's very out of proportion and its legs are very short. The only reason it got away was fantastically spoilerific, so I can't explain that. Not to mention Gypsie Danger's myriad of weapons, including a literal rocket punch and sword that can slice clean through high-class Kaiju.
In other words, place Gypsie Danger and the Colossal Tian alone in a field, the titan will wind up a hunk of mangled flesh.
Nobody has ever seen the Colossal Titan truly going all out.
Only because he has "just smashed the Cannons" on the Wall once, that doesn't mean that he can only do this kind of Movement and nothing else. From what i heard about " Gipsy Danger " - i believe that it would likely defeat the Colossal Titan in a Fight - but it's still not determined that the Colossal Titan could not fight back at least to some Extent with One of it's Tricks it has as it's Deposal.
I guess Gipsy Danger is Immune against hot Steam, since it's a Robot, right?
Plus it states in the anime that the titans flesh is extremely light and apparently swords can cut through it quite easily. Given that Jaegers are made of solid metal composites, I think if the colossal titan were to deliver a solid punch into the head piece of gypsy danger, it's hand would splatter into a mountain of blood and they'd be left starring awkwardly at each other until the robot's pilots decided to wave it's arm (which would likely weight more than the colossal titan alone) through the air space the titan currently occupies, resulting in much !fun.