Every engine is a gym with its own rules.
They all ask the same thing in the end: are you the most useful, most trusted answer? They check it differently, so a move that wins 1 gym can do nothing in the next.
Gym 1 · Google
You win by ranking #1.
Build pages around what the searcher wants to do, link guides that cover the whole topic, and earn links from sites your buyers already trust.
14.1sources per answer in Google's AI Mode, which draws on the same index.
Backfires: keyword stuffing, bought links and mass AI pages.
Gym 2 · AI Overviews
You win by getting quoted.
Put a direct answer in your first 2 sentences, then the detail. YouTube is the most cited third-party site, and Reddit shows up more here than on any other engine.
1 in 13AI Overview citations is a YouTube video.
Backfires: special AI markup. Google says none is needed.
Gym 3 · Perplexity
You win by becoming source [1].
Publish fresh pages with a visible date and specific facts, get on review sites, and put out original data that other sites quote.
11.1sources cited per answer, and only 1% of them are YouTube.
Backfires: blocking its crawler, or hiding your best guide behind a form.
Champion · ChatGPT
You win by showing up in most answers.
Get on review sites, directories, tech press and the "best of" roundups your buyers read. It cites G2 almost 3 times as often as Google's AI does.
17.6sources cited per answer, the most of any engine.
Backfires: calling yourself #1 on your own homepage, and hidden prompts.