True. I don't recall seeing videos for any of the songs from Escape on MTV. Not sure they even made any. But given when Escape was released, that would not be a surprise. They were definitely in the videos/MTV game by the time Frontiers released. But they were absolutely on radio, and were pretty unavoidable. Heck, they even had an Atari 2600 Journey Escape video game!
By the time Eliminator came out, MTV was part of the fabric of society, and those videos with ZZ Top's distinctive look and the distinctive style of the videos made them a household name. If we are comparing relative success during the same time period, it might be more apt to compare Frontiers. That album was still massive for Journey. And I think, at the time, it surpassed Escape in terms of sales. But I am not 100% sure on that, since I cannot find sales numbers by over time. I just know that Escape going diamond was helped by that album's staying power, and the fact that it has continued to sell and have songs come back into the mainstream well after the '80s.
Coincidentally, Escape was released the day before MTV debuted.
If you look at what MTV played in the early days, you see a lot of live footage videos from American artists and actual concept videos from British artists, because there was already a demand for videos in Britain before MTV existed.
I also don't recall any videos from Escape, and looking at the five singles from Escape, I don't remember a video for any of those songs. There's a video on YouTube that claims to be an "Official Music Video" for Don't Stop Believing, but once you click on it, it admits to being a fan-made video. There's an official video of Open Arms, but it's just live footage from the home video they did from the Escape tour.
Journey really got into the video scene with the follow up album Frontiers, which was released about a year and a half after escape. Separate Ways and Faithfully (and maybe one other song) had videos in heavy rotation in 1983-84, which was around the same time that the Eliminator videos were out there (Eliminator was released seven weeks after Frontiers). Since Frontiers wasn't nearly as well-received as Escape, the Eliminator videos were more popular than the Frontiers videos.
The one thing Journey had that ZZ Top didn't have was this:
The game play video is hilarious to watch:
https://www.youtube.com/watch?v=T2h-bCOI4WU