they will not surrender if they know naraku and tendoshou don't have their teacher with them,they should know if they try to fight them the naraku will 'kill' their teacher
yes,tsukuyo n sarutobi are skilled ninja,but for tsukuyo,does she already small town level even before yoshiwara arc,or she become that strong after yoshiwara arc because she fought hosen ?? then who will win,gintoki before yoshiwara vs tsukuyo before yoshiwara ??
youre right jiraia fodderized gintoki in their first fight,,but gintoki defeated him in second fight(although tsukuyo was the one who kill him),just like pluto fodderized gintoki in beginning of fight and then gintoki defeated him,so that statement is kinda moot
in gintama fighting skill is important,not just their strenght or speed,gintama is series about skilled badass samurai gintoki,via scaling you may will say madao is also stronger than past gintoki,but since he doesn't have fighting skill,he can't even killing fodder alien in second movie,,and u can say second movie is not not canon bla bla bla bla,but the characters are the same characters in anime series or manga,some of them even grew stronger,so its not hurt for using feats from that movie
yeah those shinsengumi and miwaringimi fodder can match naraku fodder who are stronger than the 4 joui
almost all fodder in gintama are wall level