I am sorry You are ofcourse right.
EMC is not just emission's the immunity part is just as important (and mandatory at least) here in Europe.
The budget way of simulating high voltage spike from the mains side is the inductor used in tube light's.
(like this one, the good old fashioned inductor) http://www.freestockphotosclub.com/objects/tube-light-choke-close-view/
We use this method at work regularly when we have problem's with reseting display's, microcontrollers etc.
Connect one side of the inductor to the minus (mains side) the second side You connect to a measuring cable which You use to touch the phase (just a brief touch) when You disconnect the measuring cable You will get high voltage spike's which are very well capable of causing reset's in micro's or display's or to scramble the display's data.
When You pass this method, You could give a real burst generator a chance.
Most electronics with an improper design that wouldn't make the IEC test's would get into trouble during the burst test's.
(although this is no guarantee, i seen problem's arise during more or less any test but most problems arise during burst tests (IEC 61000-4-4)
As always be very carefull when doing this, afterall You are generating high voltage spikes on the mains side.
Keep a good eye on isolation of cables and proper connection's etc. etc.
(and don't connect yourself by accident, You are working with mains voltage during these test's and connecting yourself can kill You)
If You are not sure on what You are doing, DO NOT TRY THIS, it might kill You.