Well..not sure. Easy thing to say when she's had Dragons all along the way.
Fact is, if she wasn't the Mother of Dragons...she probably gets tossed around the Dothrakis becoming just an abused widow.
But yes, she gained support because of her kindness and morality, but without having Dragons to back her up, not sure that would have mattered a whole lot.
Jon Snow...well yes, if he sits on the throne, it's mostly thanks to being arguably the greatest fighter there out there. Without his combat skills, he'd also be dead long ago, and he would have never gotten the respect he's earned.
Her dragons were virtually useless from seasons 2 until what 5 or 6 when they had grown. She didn't even have the dragons when she was left to die by most of the Dothraki. Yet a number of Dothraki were still loyal to her, Mormont became loyal long before the dragons too. So saying she would've been an abused widow without the dragons is clearly not true. She had gotten beyond that fate before she even had dragons.
Her early strength was based on the Unsullied which she gained through cunning. It's not at all obvious that the Second Sons joined her because of dragons, it seemed very much her inspiring love/lust in one of their leaders.
And sure maybe without the dragons she would've died, but the same could be said of Jon Snow and Ghost. Without a Dire Wolf Jon Snow probably dies vs wildings. Ghost also intimidated many Night Watch members who hated him and so kept him safe, etc...
And there's no evidence to suggest that Jon Snow is anywhere close to the greatest fighter out there. He's only ever been shown as good, most of the time versus guys with little to no training. There's not much of a case to suggest he was at the level of Jamie, The Hound, The Mountain, or Brienne, too name a few. Can we even say he was better then Tormond, Jorah, Bronn, Beric, Gendry, Arya, etc...
The reason Jon Snow is where he is has very little to do with being a great fighter. He didn't become Lord Commander of the Night's Watch because he was a skilled fighter, if you remember he even felt his fighting skills should've made him a Ranger instead of a Steward. He gained the loyalty of the wildlings by saving them, not by being the best fighter, etc...