Yes I understand that, however when using figures that make it look like we are dwarfed by the EU it makes us appear like we are dependent on all 27 of the countries, when in reality most of our trade is going to between a small group of those countries.
There is no doubting the UK "loses" more in a no-deal scenario because it loses from multiple not just one but that wasn't my argument, I understand where your argument is coming from and it will almost certainly help them to negotiate but the "pain" to each individual country is still going to be whatever it is if we end up with a no deal (and those countries we trade with the most are likely to be the larger members of the EU)....
I'm not arguing we are in "strong" position in terms of negotiations, I am arguing we are in a stronger position than is made out throwing out GDP and Import/Export figures for 1 country vs 27 - as ever its just an over simplification of what is actually happening because it favours a specific argument