Pikachu vs Mew

13 dimensions. One winner.

0.4 m

Pikachu

0.4 m

Mew

1.7 m

You*

*if you are exactly 1.70 m. We checked.

5—10

Mew takes the crown 10–5.

2 ties

Pikachu	Dimension	Mew
0.4 m	Height	0.4 m
6 kg	Weight	4 kg
94 kg/m³	Densityweight ÷ height³ — the "how is that physically possible" metric	62 kg/m³
35	HP	100
55	Attack	100
40	Defense	100
50	Sp. Attack	100
50	Sp. Defense	100
90	Speed	100
320	Base Stat Total	600
190	Catch Ratehigher = easier to catch	45
112	Base EXP Yield	270
10 cycles	Hatch Timelower = egg hatches faster	120 cycles
109	Moves Learned	375
3	Evolution Stages	1
Gen I	Debut Generationlower = debuted earlier	Gen I
70	Base Friendship	100
50% ♂ / 50% ♀	Gender Ratio	Genderless

If they actually fought

Pikachuelectric

Mewpsychic

Even — both hit for 1× (best STAB multiplier)

Pikachu

Mew