What Metric Do You Trust Most?

[Rivertraffic]

CTR?

CR?

EPC?

ROI?

If you had to choose only one metric when evaluating a campaign, which would it be and why?

 

[ProfitNInja]

If I had to choose only one metric when comparing affiliate campaigns, I’d choose EPC.

For me it is the easiest way to compare offers because, at the end of the day, the affiliate’s goal is to generate revenue from traffic.

CR, CR2REG, CR2DEP etc. are important, but they can be affected by many things: registration flow, deposit requirements, product quality, offer attractiveness, available packages, payout model

One offer can have a much higher conversion rate, but if the payout is much lower, it may still perform worse from the affiliate’s perspective. EPC gives a more balanced view because it connects traffic performance with actual earnings.

Of course, this is still a simplification. For a proper analysis, you should look at several metrics together, not only one. But if I had to pick one metric for a quick campaign comparison, EPC would be my choice.

 

[MarkDon]

If I had to choose only one metric when comparing affiliate campaigns, I’d choose EPC.

For me it is the easiest way to compare offers because, at the end of the day, the affiliate’s goal is to generate revenue from traffic.

CR, CR2REG, CR2DEP etc. are important, but they can be affected by many things: registration flow, deposit requirements, product quality, offer attractiveness, available packages, payout model

One offer can have a much higher conversion rate, but if the payout is much lower, it may still perform worse from the affiliate’s perspective. EPC gives a more balanced view because it connects traffic performance with actual earnings.

Of course, this is still a simplification. For a proper analysis, you should look at several metrics together, not only one. But if I had to pick one metric for a quick campaign comparison, EPC would be my choice.

I agree that EPC is great for comparing offers quickly, but I still feel ROI tells the real story. A campaign can have a strong EPC, but if the traffic cost is too high or scaling becomes expensive, it doesn’t really matter. ROI shows whether the campaign actually makes money after all expenses.


That said, EPC is probably the metric I’d watch first when testing new offers, then I’d move to ROI once there is enough data. The best metric depends a lot on the stage of the campaign.

 

[ProfitNInja]

I agree that EPC is great for comparing offers quickly, but I still feel ROI tells the real story. A campaign can have a strong EPC, but if the traffic cost is too high or scaling becomes expensive, it doesn’t really matter. ROI shows whether the campaign actually makes money after all expenses.


That said, EPC is probably the metric I’d watch first when testing new offers, then I’d move to ROI once there is enough data. The best metric depends a lot on the stage of the campaign.

I agree with you that ROI is the final metric when we talk about paid traffic, especially PPC or media buying. If the traffic cost is clear, ROI/ROAS tells you whether the campaign is actually profitable after all expenses.

My original point was more about comparing affiliate offers/campaigns themselves, especially across different traffic sources. In that context, EPC is often more universal because it shows how well an offer monetizes the traffic.

For SEO, organic traffic, communities, email lists or other owned traffic sources, ROI can be harder to calculate precisely. You would need to estimate the cost of content, time, tools, domain authority, previous work, and the whole process of building that traffic source. That makes ROI less clean as a quick comparison metric.

So I’d separate it this way: EPC is a very useful first metric for comparing affiliate offers and their monetization potential, while ROI is the final metric for judging paid campaign profitability.

Both matter, but if I had to choose one metric for comparing affiliate offers across all traffic sources, I’d still start with EPC