That type of 'ordinary concentration' can certainly be of great help when pondering the suttas - yes. That being said, however, there are certain things which you can't realise simply by hammering them out with reason. The Buddha says this over and over again in the suttas. And as you start looking into things using reason - which is a perfectly fine way to start - you'll come to realise the limitations of logic for yourself.
So - yes - that kind of deep concentration one uses when studying (or revising as some folks say) is useful and should be put to use. But in order to realise the more ineffable teachings - anatta, dependent origination, cessation - those come from non-discursive concentration - and meditative concentration (which doesn't necessarily mean the absorptions - as in the jhanas or the immaterial states - although they're fine things to aim at) is necessary for those types of experiential realisations or awakenings. Then, one will also be able to 'see' things in daily life - they'll pop out at you - seemingly sudden realisations - due to the 'background work' that has been done in meditation and in sutta study.
In my opinion - you need both types of concentration - they go hand in hand.
Just my two groats,
I'm your friendly, neighbourhood Asura