The results for fieldalignment and structslop are not the same. Who is better?

[Fanduzi]

package main

type Car struct {
	flag        bool
	age         int32
	F1          int8
	age2        int32
	age3        int16
	F2          int64
	F3          *int32
	InnerStruct struct {
		InnerByte byte
		//InnerStr string
	}
	F4   []byte
	Name string
	F5   error
}

func main() {

}

fieldalignment

fieldalignment -fix main.go  
/Users/TiM/Downloads/GolandProjects/helloworld/main.go:3:10: struct of size 104 could be 88

fieldalignment result

type Car struct {
	F5          error
	F3          *int32
	Name        string
	F4          []byte
	F2          int64
	age         int32
	age2        int32
	age3        int16
	flag        bool
	InnerStruct struct{ InnerByte byte }
	F1          int8
}

structslop

structslop -apply main.go     
/Users/TiM/Downloads/GolandProjects/helloworld/main.go:3:10: struct has size 104 (size class 112), could be 88 (size class 96), you'll save 14.29% if you rearrange it to:
struct {
        F4          []byte
        Name        string
        F5          error
        F3          *int32
        F2          int64
        age         int32
        age2        int32
        age3        int16
        flag        bool
        InnerStruct struct{ InnerByte byte }
        F1          int8
}

structslop result

type Car struct {
        F4          []byte
        Name        string
        F5          error
        F3          *int32
        F2          int64
        age         int32
        age2        int32
        age3        int16
        flag        bool
        InnerStruct struct{ InnerByte byte }
        F1          int8
}

The results for fieldalignment and structslop are not the same

test the under Car with fieldalignment

type Car struct {
        F4          []byte
        Name        string
        F5          error
        F3          *int32
        F2          int64
        age         int32
        age2        int32
        age3        int16
        flag        bool
        InnerStruct struct{ InnerByte byte }
        F1          int8
}

fieldalignment -fix main.go
/Users/TiM/Downloads/GolandProjects/helloworld/main.go:3:10: struct with 64 pointer bytes could be 48