And I debunked that particular side argument readily with facts by listing things in which Parliament factually gained powers. Which means that your admission remains the admission of increase of democratization.
P.S. If you really want to measure parliament's relative power increase, the recent debacle with the Commission President post was a great example of just how much more powerful Parliament got after Lisbon. Under previous treaties, there was no way that it would have gotten Juncker as head of Commission against the will of British PM.
And now, it was able to mobilize and effectively brutally push Juncker through crushing the opposition from Great Britain.
I want to emphasize my point again. There is a lot of work ahead to democratize the Union. But Lisbon was a step in a right direction because it shifter power from elite-chosen Commission and Council to the directly democratically elected Parliament which saw its power and influence increased significantly. That is the undeniable reality.
Now, the progress must continue, and in this regard Eurospeptics of the populist kind seem to be shooting themselves in the foot. Instead of getting involved with decision-making and shaping the Union closer to their ideals, they go for Anglo-style "all or nothing" argument. And then they lose, because overwhelming majority of Europe has a culture of being ruled by consensus and outliers who are unwilling to compromise get left out.
Which is a problem in my opinion, one that my country handled quite well by effectively forcing our anti-European populist party that gained prominence to come and work with the rest. Consensus and having to work with those you are ideologically opposed to tames the extremists in those parties and brings them closer to the mainstream, while at the same time giving them actual power over what will happen.