Seen as you want to selectively talk about only the issues that suit you, I'll afford you the same respect.
Yes, I agree, we are both similar sized clubs and have been for most of the last century. You won't hear many City fans claiming differently. It was your manager who suggested differently when he claimed Tottenham were a bigger club with "bigger fans". Whatever the fuck that means.
There have been periods over the last century - such as the late 80s / 90s, where it would be fair to argue that Tottenham were the bigger club at that moment in time. You had a billionaire owner, splashed the cash on big name players like Lineker and Gascoigne, while City had Neil McNab and Gary Megson and we were in the old 2nd division.
And it's also fair to say at this point in history, City are a bigger club. We've been getting 10k more fans than you for over 10 years, and 20k more than you for the last couple of seasons. We've won the PL twice in the last 5 seasons, you've not won the top flight in over 50 years. We've got Aguero, DeBruyne and Guardiola while you've got Kane, Alli and Pochetino. All 3 of yours are excellent, but it would be a real stretch to call them better, more well known, or indeed, bigger.
So to conclude, yes we are similar sized clubs over the last 100 years. But in 2017 I can't think of a single metric by which you could argue Tottenham as a club, or their fans, are "bigger".