Yeah, statements are inconsistent. Sarutobi is a perfect example of this, actually. He's stated to be the strongest of the 5 Kage, but if you compare him to the Raikage or the Tsuchikage, Sarutobi would get meme'ed on. At best I would say the third Hokage is at building level when he died, any didn't show anything too much bigger than that while an Edo with no commendable speed feats. Yet Onoki is island level(+) if you look at his Dust release feats and A is a lighting timer with lethal taijutsu. That's two of the other 4 Kage that are arguably superior to Sarutobi, casually.
Yet Hiruzen is somehow classifed as a God of Shinobi. Know who else has that title? Madara, Hashirama, and Hagoromo. So one of these people is not like the other when looking at the whole list.
You can also look at Tobirama. He was supposedly the best Suiton user, but Kisame blows any observable feat Tobirama has ever produced out of the water with a 30% clone. Statements are unquantifiable, and really have no place in meaningful debate, unless they can be otherwise supported with pannels.
And Shadow, Tobirama is my favorite Kage, but I don't agree that he's stronger than Minato. Tobirama himself said that Minato was better with FTG than he was while also having access to the Shadow clone technique and sage mode. You can't really count on his having the Edo Tensei for a fair comparison either, because he never displayed any zombies that he had on tap; his arsenal is an unknown. He could have an army of D rank ninja, or 1 S rank ninja. It's impossible to quantify, so it's not wise to use it.
Other countries had a "Run on sight" order if Minato appeared in the fight. He was able to defeat Tobi in a one on one fight, when 3 people working in tandem were unable to do anything against Obito in the war.
Tobirama on the other hand was able to ice Izuna Uchiha, who was supposedly on par with Mangekyo Sharingan Madara at the time, and was only killed by a group known as the Kinkaku force, composed entirely of S rank shinobi. I admit, he's nothing to sneeze at, but he lacks the feats Minato has.