you must be stupid. a macer mage like yourself does way more dmg than an alchy stun. unless he stuns you regularly he shouldnt be throwing to many pots. because if your any good your riding his ass with that mace which would mean hes being hit by his own pots as well. the downside to an alchy stun against a macer mage is that he needs stam to stun, your wep takes that stam from him on top of stupid dmg. you must have not learned much. now assuming he had like 30-35 refreshes then yea he should be stunning you and doing his combos with ease. your hits come more often than his pots if know much about swing speed and pot throwing. mechanics of uo must just not click in your head.
then on top of all that its not just any old mace your hitting him with its one that does almost 35-50 dmg per hit probably.
if a macer is chasing an alchy mage, doesnt necessarily mean he will be running pots into you, especially if you have footwork as an alchy mage
Also, if you use an agility pot, no matter how much stam he eats you will still get 1 stun attempt per refresh pot, so your stun attempts will not be faltered.
And, since he is wielding a weapon, you have a higher % chance of stun, so you will definitely be getting a lot of stuns.
But the best thing you can do is time your combo around a dexxers bandages. If he doesnt bandage, there should be no reason to die to a dexxer, unless you have no armor or hes using a vally. But once you know their timing of bandages, i just toss a poison in my combo right around 10 seconds into the dump and you'd be surprised how many bandaids are wasted on poisons.
And i would also go as far to say that reactive armor is more useful against dexxers than magic reflection is against mages.
But like ive said many times. Each template has a ceiling as to how good they can be. And being a mage has a much higher skill ceiling than being a great dexxer. But it is definitely a lot easier to reach the ceiling of being a dexxer than it is to being a mage, which is why being a dexxer is a very common template used by many new players.