the crap you get from cans and bottles is nearly 8% and i don't
know what kind of *$ they put in it..
the draught is 4%
it seems "stronger" because it feels creamy.. and it's creamy
because they use nitrogen instead of carbon dioxide..
give the stuff on tap a try... i've made believers out of a lot of
people 
and if you don't believe me, ask tare about Guinness... and how
disgusting the canned and bottled version is.. and how good the
stuff on tap is 