Dart - Comparing two Map values - flutter

Question

I have two Maps, bookingMap & reserveMap. Both maps have the same keys but different values. bookingMap is for the guest to book the seats whereas reserveMap is for the backend team. I want to compare the values of both maps with the help of their respective keys, if the values are equal I want to increment the totalSeats by +1 or +2. If the values don't match I want to subtract totalSeats by -1 or -2 respectively. Both maps have the same keys but map 1 can contain 10 out of 5 keys and Map 2 contains exactly 10 keys and values. If use if-else statements the code will be long. Is there a method or a way I'm missing?
The code below checks all the values, not the individuals.
import 'package:collection/collection.dart';
void main() {
compareValues();
}
void compareValues() {
int totalSeats = 0;
// Booking Map
Map<String, int> bookingMap = {
'c1': 1,
'c2': 2,
'c3': 3,
'c4': 5,
};
//Seat Map
Map<String, int> reserveMap = {
'c1': 1,
'c2': 2,
'c3': 3,
'c4': 4,
'c5': 6,
};
if (DeepCollectionEquality().equals(bookingMap.values, reserveMap.values)) {
totalSeats = totalSeats + 1;
} else {
totalSeats = totalSeats - 1;
}
print(totalSeats);
}

Answer 1

I think you need iterate through all keys and compare values. Something like that:
void compareValues() {
int totalSeats = 0;
Map<String, int> bookingMap = {
'c1': 1,
'c2': 2,
'c3': 3,
'c4': 5,
};
Map<String, int> reserveMap = {
'c1': 1,
'c2': 2,
'c3': 3,
'c4': 4,
'c5': 6,
};
var equals = true;
for (final kv in bookingMap.entries) {
if (reserveMap[kv.key] != kv.value) {
equals = false;
break;
}
}
if (equals) {
totalSeats = totalSeats + 1;
} else {
totalSeats = totalSeats - 1;
}
print(totalSeats);
}

Answer 2

With the help of and altering #chessmax answer I solved the issue with the following code.
void compareValues() {
int totalSeats = 0;
Map<String, int> bookingMap = {
'c1': 1,
'c2': 2,
'c3': 3,
'c4': 4,
'c5': 6,
};
Map<String, int> reserveMap = {
'c1': 1,
'c2': 2,
'c3': 3,
'c4': 4,
'c5': 66,
};
for (final kv in bookingMap.entries) {
if (reserveMap[kv.key] == kv.value) {
totalSeats = totalSeats + 1;
} else {
totalSeats = totalSeats - 1;
}
}
print(totalSeats);
}