Does a 99 Beat a 95?

Engine Research · 5 min

It's a natural question. If the Expert Rating runs to 100, then a 99 must be "better" than a 95 — a stronger buy, a surer thing. It's worth slowing down on that assumption, because the way the scale actually behaves is more useful once you understand it.

What a higher number is really saying

The rating measures how one-sided the evidence is, not how large a move is coming. As the up-rating climbs from the 80s into the 90s and toward 100, what's increasing is agreement — more of the conditions the engine tracks are leaning the same way, with less contradicting them.

So a 99 does mean something specific relative to a 95: the evidence is even more lopsided, with fewer conditions pushing the other way. That's genuine information about conviction. What it is not is a promise of a bigger or faster move. Conviction in the evidence and magnitude of the outcome are two different things, and the score measures the first, not the second.

Why "just buy the highest number" misses the point

If you sort your watchlist and only ever act on the very highest ratings, you're implicitly assuming that a 99 is a categorically better trade than a 95. But two things get in the way of that.

First, as covered in our note on early vs. late signals, a very high rating is often built from confirming evidence — an established trend that's already visible. That's a high-conviction reading, but it can also mean a good part of the move is already on the chart. A slightly lower rating built from leading evidence can sit closer to a turning point.

Second — and this is the honest part — the rating ranks better than it times. It's good at separating stronger setups from weaker ones. It is not built to tell you that today's close, specifically, is the moment to act. Chasing the single highest number treats a ranking tool as a timing tool, which is not what it is.

How to use the top of the scale well

Think of the high 90s as a strong filter, not a leaderboard to trade from top to bottom:

A 99 tells you the evidence is about as one-sided as it gets. That's worth knowing. It just isn't the same thing as "the best trade on the screen."

Higher means more agreement, not a bigger move. Rank with it; time with your own rules.

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