Well,anyway, mechanics are not that complex.It's all about who has the most CS to throw at the enemy and who can recruit faster.
In a lot of cases, that's true. But then again, what else would you expect? CS is, after all, the "combat strength" of your army.
All else being equal, if you have twice the combat strength of your enemy, then you *should* win. If not, then the system is messed up. Badly.
Your task as a military leader is to make sure that all else is
not equal. There are things that you can use to your advantage to help you win. This includes things like troop type balance, fortifications, terrain, infiltrators, scouting, troop discipline, diplomacy, etc., etc. If you think the only way to win is "bigger blob of troops", then you're seriously missing out on a lot.
Not that "the bigger the blob, the better the job" isn't sometimes exactly what is required. Things like assaulting cities and strongholds come to mind.