EA Junior school doesn't "push" at all. If the child is self-motivated to study, they can. If they are not, they coast downwards. There are stories of kids at the end of P5 realising they need help, going to a tutor programme, doing an assessment, and being assessed as being at the end of P3 level... There is absolutely no push to learn the times tables, for example - lots of kids in P6, P7 still don't know half of it.
Senior school is not much better. There is a much greater load there, but the problem is that the kids are absolutely not ready for this from their years at the junior school...
As for GH - yes, I agree with the strong priority for academic performance comment - we considered them at some point and that was the impression we got from the school directly.
GW is a much bigger school, but that has its benefits - lots of facilities onsite, including a shooting range! They also seem to have a much more pragmatic approach to teaching - they try to help kids level up.
In EA, there are the star students, there are the sports students, and everyone else. GW is much more leveled compared to this.
Also, here is a quote for you, explaining EA's attitude to education:
"Our children’s mental health is more important than their academic skills.
Of course, we will do our very best to continue to provide an academic and rigorous education but what we are looking forward to most is having healthy, happy and emotionally secure children back at school" ...