I'm comparing Toronto transit as a whole to other cities. It's doesn't look good right now.
Comparing to what other cities?
Here is a list of all cities with urban agglomerations between 4.5 Million and 6.5 Million as published by the UN. Those population ranges were chosen because Toronto is basically in the middle of them.
Madrid, Chengdu, Ahmedabad, Foshan, Ho Chi Minh City, Miami, Santiago, Baghdad, Philadelphia, Nanjing, Harbin, Barcelona, Toronto, Shenyang, Belo Horizonte, Riyadh, Hangzhou, Dallas–Fort Worth, Singapore, Chittagong, Pune, Atlanta, Xi'an, Saint Petersburg, Luanda, Houston, Boston, Washington D.C., Khartoum
Here is how I would them relative to Toronto:
Madrid, Barcelona, Saint Petersburg, Santiago, and Singapore indisputably have better service today.
Boston might be considered on par today. Solid rush-hour service, TTC/GO clobber MBTA in off-peak service. MBTA has serious debt pressure which is causing them to cut service (fare increases are capped at 2.4%/year by law) while Toronto (outside of York Region) is improving service.
Washington DC is either much better (if you live at a station and don't mind 15 minute train frequencies) or much worse (rely on bus service). Their 2018 silver line is roughly equal to the Spadina Line extension.
Xi'an, Chengdu, Ho Chi Minh City, Ahmedabad, Riyadh, Nanjing, Shenyang, and Hangzhou are far worse today but have multiple lines opening in the next 5 years. Some of these expansion plans are better than others. A commitment to 15 minute off-peak GO service on all lines would keep Toronto in a good position relative to these cities in the medium-term (2025). Most of these are Chinese cities.
Harbin has lots of plans but not much under construction. China moves fast if these plans garnered the attention of upper-levels of government; left to the locals nothing will happen.
Foshan, Luanda, Chittagong, Miami, Baghdad, Dallas-Fort Worth, Houston, Philadelphia, Atlanta, Belo Horizonte, and Pune are indisputably worse and have no actionable plans for significant improvement.
Khartoum doesn't seem to much published on public transit in the area and I have no first hand knowledge; though I would probably hire a driver and security guard if I did visit. Sudan in general seems to have severe transportation issues both for freight and passenger, in all modes. I expect Khartoum is the same.
I may have missed a few, but it's pretty clear Toronto is in the top 3rd of similarly sized cities today and if we do absolutely nothing at all (including cancel Eglinton and replace the SRT with bus service) Toronto remains in the top half in 2020.
Certainly, cities with solid metro's tend to be much more well known. In the case of Madrid, Barcelona, and Singapore, they were well known tourist destinations before they had a solid metro.