Ramezzess 777 lack accuracy in terms of exterior modelling while CaptainSim model accuracy is top notch. Xp10 777 have huge gears, inaccurate engine nacelle model with too many
Fan blades, wingflex is wrong/strange, cockpit is a little cartoony, there are more but i forgotten.
Captainsim 777 is better IMHO, model is very detailed like Ramezzess but not as complex in systems than Ramezzess 777. Also CaptainSim 777 product offer a wider range of models not just the 777-200LR, and liveries arent paid for and fictional.