My experience with those two SL lavenders was very similar to yours.
Here's the thing: Encens et Lavande has such a realistic smell of incense, but not the smoking, burning type - rather incense in it's unburnt, raw state. That is the biggest difference and it is important - as it is a bit confusing since incense scents sometimes are smoky (the CdG Incense Series, Serge Noire, Black Tourmaline...) and some are not (Incense Extreme, Passage d'Enfer..._). Perhaps you are not familiar with the smell of real, raw incense - unburnt.
Of course, whether they are smoky or not, does not necessarily mean one will like it or not - it just depends on your taste(s). If you enjoy GC more than EeL, I wouldn't worry about it. No need to feel like you're missing out on anything if you don't like EeL.