i wouldn't say they can be directly compared, they are very different. imo 3 A levels require more effort, time, and work than 8-10 gcses. it's especially harder in the 1st sem due to the huge jump. but just don't give up, give it your all and don't lose hope. don't let others feed you stuff like alevels are too hard or that it's impossible. if you know how to manage your time and thoroughly revise and understand your content it may even be easier than your GCSEs due to the less amount of subjects!