I was searching for comparisons between space rockets regarding their payload mass in low Earth orbit and Earth escaping. First one to see capability of the space booster (the first stages) and second one to see results and efficiency of upper stages.
Comparisons could be found in wikipedia, but these aren't a fair comparison since low orbit heights and inclinations for these rockets are different. If we compare something should be used the same standard. Many USA rockets are launched in 28.7° (or 28.5° or 28°) inclination, and their low orbit values are for 185 km or 200 km. Russian rockets are launched from Baikonour in 51.6° and values for low orbit are mostly from 200km or 220km. ESA rockets are launched from Kourou site at 5° inclination. Soyuz rocket is launched from both these sites ( Baikonour 51.6°, Kourou 5°). We could understand how much influences inclination for this Soyuz from here. But with Soyuz case we are lucky since it is launched in different inclinations. Question is what about all other rockets. Values would be different for low Earth orbits in 185 km - 200 km - 220 km, and in different inclinations. Maybe their influence would not be to much but still the comparison is not real and fair.
For low Earth orbit we need the same orbit and inclination. For Earth escape were orbit's heigh doesn't matter still the inclination should be the same. Is there any program or website that could compare rockets with the same standard and in the same conditions?
Until now i found this site silverbirdastronautics were we could change inclination and orbit's height, but this is not a reliable site because payload values are differnt from official results for those rockets and it hasn't a high level of accuracy.
Could we make a fair comparison of space rockets regarding their low Earth orbit and Earth escape payloads?