Even a malphite with 438 armor gets destroyed

438 armor is over 75% physical damage reduction.

ADCs noncrits wont really do more than 250

200% of 250 is 500 250% of 250 is 625 ( from IE )

625 crits and thats actually extremely high )

80% reduction of 625 is 500

Each crit would do 125 damage.

Standard tank / bruiser has 3k hp.

3k / 125 is 24

Malphite would have to have taken 24 autos all crits to die.

Implying malphite has no shield ( which he gets a fat fuckin shield btw )

Also implying the adc is not slowed from malphite ( malphite slows attack speed )

Tl;dr Your post is bullshit.

i would suggest linking the game in question if you want useful responses.

If it turns out the ADC in question was Corki/Kog'maw or the team had significant amounts of armor reduction (i.e. Wukong, Jarvan, Kog'maw, Black Cleaver), I'm going to laugh.

This post is almost definitely bs, or the malphite sucks ass at counterbuilding.

yeah no

not unless it was someone who was specifically made to shred tanks

You forgot to mention malphite had 200 health remaining from a team fight.

How much health did Malphite have?

Really? Last time I saw this our Draven decided to kite until Malph got into melee range, and then decided to face tank him.

He got through maybe 1/4 of his health.

Was it against a fed Vayne?