The two main airgun events (EBR, RMAC) here in the US are sponsored by a lot of manufactures and run by the two retailers (Airguns of Arizona, Utah Airguns). There a lot of variability in the events particular 100yd event due to wind. There are many different events, and the same gun may not be ideally suited for the same event. You may want to look at what the field target guys use, and what wins indoor competitions in Europe use (I did at one point a few years back, and surprised seeing RAW, War, AAA, BSA Lonestar, and FX in that order). Finally, to be competitive, years of trigger time with your gun may be way more important than the latest model. I haven't looked at the results over time, but I would not be surprised if improvements in scores are due to shooters rather than a particular brand or model.