Easy and Normal are very simple to get through. To make things even easier, each character usually has one move (or one button) you could spam to get through the whole thing.
The real problem with Survival is that if you have a bad round and they only give you the low health option in next stage, youre probably screwed and just wasted all your time. Itd be a whole lot more enjoyable if they got rid of the supplement system and just gave you full health each time, since its not like the CPU is getting any easier, especially on Hard/Extreme. Those two difficulties are way too risky for how time-consuming they are. And when you lose, even with 30 minutes of progress, theres no reward. Just delete this trash from SFV. Just seeing the word Survival on main menu is enough to kill my momentum in Ranked/Casual. It basically gives me PTSD on sight.