I don't know what EAL is and likely those looking for a qualification will not have heard of it either so I would always go for C&G exam.
I remember back in 2001 when the regulations became BS7671 both myself and the other electrician working with me wanted to upgrade to the new 16th edition exam. I had an old C&G qualification but the other guy had some thing issued by the local college.
My up-grade cost half what the other guy paid as I was allowed to take short up-grade where he had to take the whole exam from scratch. When BS7671:2008 came out again I was able to take up-grade exam which was cheaper than taking the whole exam from scratch.
I have not had to upgrade my C&G2391 but who knows what will happen in the future? I think there is a easier to pass C&G2392 now but was not an option when I took the exam and practical test.
I do laugh at the level 3 tag. Both the 2391 and the 2382 are classed as level 3 but I am sure a monkey could pass the 2382 your even allowed to take book into the exam. "A" levels are also classed as level 3 and Physics and Maths "A" are quite involved yet Art "A" level was really easy.